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90468895751 = 13192543144031
BaseRepresentation
bin101010001000001011…
…1011100110000000111
322122111221012002011122
41110100113130300013
52440240014131001
6105321050224155
76351621632363
oct1242027346007
9278457162148
1090468895751
1135405373443
1215649a2505b
1386ba0068a0
1445432b82a3
1525475edb1b
hex15105dcc07

90468895751 has 16 divisors (see below), whose sum is σ = 102596874240. Its totient is φ = 79082840160.

The previous prime is 90468895723. The next prime is 90468895771. The reversal of 90468895751 is 15759886409.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-90468895751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90468895771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 556106 + ... + 700136.

It is an arithmetic number, because the mean of its divisors is an integer number (6412304640).

Almost surely, 290468895751 is an apocalyptic number.

90468895751 is a deficient number, since it is larger than the sum of its proper divisors (12127978489).

90468895751 is a wasteful number, since it uses less digits than its factorization.

90468895751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146606.

The product of its (nonzero) digits is 21772800, while the sum is 62.

The spelling of 90468895751 in words is "ninety billion, four hundred sixty-eight million, eight hundred ninety-five thousand, seven hundred fifty-one".

Divisors: 1 13 19 247 2543 33059 48317 144031 628121 1872403 2736589 35575657 366270833 4761520829 6959145827 90468895751