923138470656 has 72 divisors (see below), whose sum is σ = 2729882882160. Its totient is φ = 307712821248.

The previous prime is 923138470651. The next prime is 923138470673. The reversal of 923138470656 is 656074831329.

923138470656 is a `hidden beast` number, since 92 + 3 + 1 + 38 + 470 + 6 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (923138470651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66771045 + ... + 66784868.

It is an arithmetic number, because the mean of its divisors is an integer number (37915040030).

It is a 1-persistent number, because it is pandigital, but 2⋅923138470656 = 1846276941312 is not.

Almost surely, 2^923138470656 is an apocalyptic number.

923138470656 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

923138470656 is an abundant number, since it is smaller than the sum of its proper divisors (1806744411504).

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

923138470656 is a wasteful number, since it uses less digits than its factorization.

923138470656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133555938 (or 133555918 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 54.

The spelling of 923138470656 in words is "nine hundred twenty-three billion, one hundred thirty-eight million, four hundred seventy thousand, six hundred fifty-six".