23687023842 has 12 divisors (see below), whose sum is σ = 51321885030. Its totient is φ = 7895674608.

The previous prime is 23687023793. The next prime is 23687023859. The reversal of 23687023842 is 24832078632.

It can be written as a sum of positive squares in only one way, i.e., 14669812161 + 9017211681 = 121119^2 + 94959^2 .

It is a super-2 number, since 2×23687023842² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 657972867 + ... + 657972902.

Almost surely, 2^23687023842 is an apocalyptic number.

23687023842 is an abundant number, since it is smaller than the sum of its proper divisors (27634861188).

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

23687023842 is a wasteful number, since it uses less digits than its factorization.

23687023842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315945777 (or 1315945774 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The spelling of 23687023842 in words is "twenty-three billion, six hundred eighty-seven million, twenty-three thousand, eight hundred forty-two".