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1368704081855 = 511174347217211
BaseRepresentation
bin10011111010101101000…
…111101101111110111111
311211211212100012102121102
4103322231013231332333
5134411101221104410
62524435102323315
7200612522511125
oct23725507557677
94754770172542
101368704081855
11488511854830
121a132028953b
139c0b6c05a06
144a362023915
152590a8a02a5
hex13ead1edfbf

1368704081855 has 64 divisors (see below), whose sum is σ = 1941955969536. Its totient is φ = 914758656000.

The previous prime is 1368704081837. The next prime is 1368704081869. The reversal of 1368704081855 is 5581804078631.

It is not a de Polignac number, because 1368704081855 - 210 = 1368704080831 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1368704081855.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 189804200 + ... + 189811410.

It is an arithmetic number, because the mean of its divisors is an integer number (30343062024).

Almost surely, 21368704081855 is an apocalyptic number.

1368704081855 is a deficient number, since it is larger than the sum of its proper divisors (573251887681).

1368704081855 is a wasteful number, since it uses less digits than its factorization.

1368704081855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12008.

The product of its (nonzero) digits is 6451200, while the sum is 56.

The spelling of 1368704081855 in words is "one trillion, three hundred sixty-eight billion, seven hundred four million, eighty-one thousand, eight hundred fifty-five".

Divisors: 1 5 11 17 43 55 85 187 215 473 731 935 2365 3655 4721 7211 8041 23605 36055 40205 51931 79321 80257 122587 203003 259655 310073 396605 401285 612935 882827 1015015 1348457 1550365 2233033 3410803 3451051 4414135 5271241 6742285 11165165 17054015 17255255 26356205 34043131 37961561 57983651 170215655 189807805 289918255 374474441 578733227 1463854633 1872372205 2893666135 6366065497 7319273165 16102400963 24885528761 31830327485 80512004815 124427643805 273740816371 1368704081855