315642051842 has 64 divisors (see below), whose sum is σ = 532804656384. Its totient is φ = 139282778880.

The previous prime is 315642051841. The next prime is 315642051883. The reversal of 315642051842 is 248150246513.

It is a self number, because there is not a number n which added to its sum of digits gives 315642051842.

It is not an unprimeable number, because it can be changed into a prime (315642051841) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20961188 + ... + 20976240.

It is an arithmetic number, because the mean of its divisors is an integer number (8325072756).

Almost surely, 2^315642051842 is an apocalyptic number.

315642051842 is a deficient number, since it is larger than the sum of its proper divisors (217162604542).

315642051842 is a wasteful number, since it uses less digits than its factorization.

315642051842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15483.

The product of its (nonzero) digits is 230400, while the sum is 41.

The spelling of 315642051842 in words is "three hundred fifteen billion, six hundred forty-two million, fifty-one thousand, eight hundred forty-two".