123423137664 has 64 divisors (see below), whose sum is σ = 331088780880. Its totient is φ = 40733696000.

The previous prime is 123423137653. The next prime is 123423137699. The reversal of 123423137664 is 466731324321.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1552377 + ... + 1629944.

Almost surely, 2^123423137664 is an apocalyptic number.

It is an amenable number.

123423137664 is an abundant number, since it is smaller than the sum of its proper divisors (207665643216).

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

123423137664 is a wasteful number, since it uses less digits than its factorization.

123423137664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3182439 (or 3182427 counting only the distinct ones).

The product of its digits is 435456, while the sum is 42.

The spelling of 123423137664 in words is "one hundred twenty-three billion, four hundred twenty-three million, one hundred thirty-seven thousand, six hundred sixty-four".