123894306956 has 24 divisors (see below), whose sum is σ = 252845527200. Its totient is φ = 53097559536.

The previous prime is 123894306923. The next prime is 123894306961. The reversal of 123894306956 is 659603498321.

It is a happy number.

It is a super-2 number, since 2×123894306956² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45149615 + ... + 45152358.

It is an arithmetic number, because the mean of its divisors is an integer number (10535230300).

Almost surely, 2^123894306956 is an apocalyptic number.

It is an amenable number.

123894306956 is an abundant number, since it is smaller than the sum of its proper divisors (128951220244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123894306956 is an equidigital number, since it uses as much as digits as its factorization.

123894306956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90301998 (or 90301982 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 56.

The spelling of 123894306956 in words is "one hundred twenty-three billion, eight hundred ninety-four million, three hundred six thousand, nine hundred fifty-six".