123477855864 has 32 divisors (see below), whose sum is σ = 336757789440. Its totient is φ = 37417532000.

The previous prime is 123477855857. The next prime is 123477855923. The reversal of 123477855864 is 468558774321.

It is a junction number, because it is equal to n+sod(n) for n = 123477855798 and 123477855807.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233859312 + ... + 233859839.

It is an arithmetic number, because the mean of its divisors is an integer number (10523680920).

Almost surely, 2^123477855864 is an apocalyptic number.

It is an amenable number.

123477855864 is an abundant number, since it is smaller than the sum of its proper divisors (213279933576).

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

123477855864 is a wasteful number, since it uses less digits than its factorization.

123477855864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467719171 (or 467719167 counting only the distinct ones).

The product of its digits is 45158400, while the sum is 60.

The spelling of 123477855864 in words is "one hundred twenty-three billion, four hundred seventy-seven million, eight hundred fifty-five thousand, eight hundred sixty-four".