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123013331755 = 5733120127947
BaseRepresentation
bin111001010010000101…
…0100111101100101011
3102202112000021201120021
41302210022213230223
54003412403104010
6132302254341311
711613246032116
oct1624412475453
9382460251507
10123013331755
1148195900946
121ba10aba837
13b7a5588b02
145d4d61d57d
1532ee7ce8da
hex1ca42a7b2b

123013331755 has 16 divisors (see below), whose sum is σ = 147945756384. Its totient is φ = 98191065600.

The previous prime is 123013331741. The next prime is 123013331773. The reversal of 123013331755 is 557133310321.

It is not a de Polignac number, because 123013331755 - 221 = 123011234603 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123013331755.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4387692 + ... + 4415638.

It is an arithmetic number, because the mean of its divisors is an integer number (9246609774).

Almost surely, 2123013331755 is an apocalyptic number.

123013331755 is a deficient number, since it is larger than the sum of its proper divisors (24932424629).

123013331755 is a wasteful number, since it uses less digits than its factorization.

123013331755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29886.

The product of its (nonzero) digits is 28350, while the sum is 34.

The spelling of 123013331755 in words is "one hundred twenty-three billion, thirteen million, three hundred thirty-one thousand, seven hundred fifty-five".

Divisors: 1 5 733 1201 3665 6005 27947 139735 880333 4401665 20485151 33564347 102425755 167821735 24602666351 123013331755