515979438402 has 32 divisors (see below), whose sum is σ = 1037331060480. Its totient is φ = 171098539920.

The previous prime is 515979438397. The next prime is 515979438427. The reversal of 515979438402 is 204834979515.

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, 2665093 + ... + 2852135.

It is an arithmetic number, because the mean of its divisors is an integer number (32416595640).

Almost surely, 2^515979438402 is an apocalyptic number.

515979438402 is an abundant number, since it is smaller than the sum of its proper divisors (521351622078).

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

515979438402 is a wasteful number, since it uses less digits than its factorization.

515979438402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189438.

The product of its (nonzero) digits is 10886400, while the sum is 57.

The spelling of 515979438402 in words is "five hundred fifteen billion, nine hundred seventy-nine million, four hundred thirty-eight thousand, four hundred two".