215885032542 has 32 divisors (see below), whose sum is σ = 483522048000. Its totient is φ = 71395047864.

The previous prime is 215885032529. The next prime is 215885032613. The reversal of 215885032542 is 245230588512.

215885032542 is a `hidden beast` number, since 2 + 1 + 5 + 88 + 503 + 25 + 42 = 666.

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, 15732792 + ... + 15746507.

It is an arithmetic number, because the mean of its divisors is an integer number (15110064000).

Almost surely, 2^215885032542 is an apocalyptic number.

215885032542 is an abundant number, since it is smaller than the sum of its proper divisors (267637015458).

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

215885032542 is a wasteful number, since it uses less digits than its factorization.

215885032542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31479437 (or 31479431 counting only the distinct ones).

The product of its (nonzero) digits is 768000, while the sum is 45.

The spelling of 215885032542 in words is "two hundred fifteen billion, eight hundred eighty-five million, thirty-two thousand, five hundred forty-two".