123395385564 has 72 divisors (see below), whose sum is σ = 360288150768. Its totient is φ = 35192977920.

The previous prime is 123395385557. The next prime is 123395385587. The reversal of 123395385564 is 465583593321.

123395385564 is a `hidden beast` number, since 1 + 2 + 3 + 39 + 53 + 8 + 556 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 123395385564.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 9158107 + ... + 9171570.

It is an arithmetic number, because the mean of its divisors is an integer number (5004002094).

Almost surely, 2^123395385564 is an apocalyptic number.

It is an amenable number.

123395385564 is an abundant number, since it is smaller than the sum of its proper divisors (236892765204).

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

123395385564 is a wasteful number, since it uses less digits than its factorization.

123395385564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18329715 (or 18329710 counting only the distinct ones).

The product of its digits is 11664000, while the sum is 54.

The spelling of 123395385564 in words is "one hundred twenty-three billion, three hundred ninety-five million, three hundred eighty-five thousand, five hundred sixty-four".