42972831515 has 16 divisors (see below), whose sum is σ = 52377042432. Its totient is φ = 33839286624.

The previous prime is 42972831497. The next prime is 42972831527. The reversal of 42972831515 is 51513827924.

It is a cyclic number.

It is not a de Polignac number, because 42972831515 - 2²² = 42968637211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42972831515.

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, 396212 + ... + 492878.

It is an arithmetic number, because the mean of its divisors is an integer number (3273565152).

Almost surely, 2^42972831515 is an apocalyptic number.

42972831515 is a deficient number, since it is larger than the sum of its proper divisors (9404210917).

42972831515 is a wasteful number, since it uses less digits than its factorization.

42972831515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98066.

The product of its digits is 604800, while the sum is 47.

The spelling of 42972831515 in words is "forty-two billion, nine hundred seventy-two million, eight hundred thirty-one thousand, five hundred fifteen".