15023515542 has 48 divisors (see below), whose sum is σ = 34966572480. Its totient is φ = 4290725712.

The previous prime is 15023515537. The next prime is 15023515543. The reversal of 15023515542 is 24551532051.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15023515543) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 855373 + ... + 872759.

It is an arithmetic number, because the mean of its divisors is an integer number (728470260).

Almost surely, 2^15023515542 is an apocalyptic number.

15023515542 is an abundant number, since it is smaller than the sum of its proper divisors (19943056938).

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

15023515542 is a wasteful number, since it uses less digits than its factorization.

15023515542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20345 (or 20338 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 33.

The spelling of 15023515542 in words is "fifteen billion, twenty-three million, five hundred fifteen thousand, five hundred forty-two".