23515402542 has 32 divisors (see below), whose sum is σ = 47538332160. Its totient is φ = 7754110560.

The previous prime is 23515402529. The next prime is 23515402567. The reversal of 23515402542 is 24520451532.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 384183 + ... + 441165.

It is an arithmetic number, because the mean of its divisors is an integer number (1485572880).

Almost surely, 2^23515402542 is an apocalyptic number.

23515402542 is an abundant number, since it is smaller than the sum of its proper divisors (24022929618).

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

23515402542 is a wasteful number, since it uses less digits than its factorization.

23515402542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57728.

The product of its (nonzero) digits is 48000, while the sum is 33.

The spelling of 23515402542 in words is "twenty-three billion, five hundred fifteen million, four hundred two thousand, five hundred forty-two".