215320435640560 has 80 divisors (see below), whose sum is σ = 501001676474400. Its totient is φ = 86062524779520.

The previous prime is 215320435640503. The next prime is 215320435640587. The reversal of 215320435640560 is 65046534023512.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×215320435640560² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 215320435640560.

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, 1110598030 + ... + 1110791890.

It is an arithmetic number, because the mean of its divisors is an integer number (6262520955930).

Almost surely, 2^{215320435640560} is an apocalyptic number.

215320435640560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215320435640560 is an abundant number, since it is smaller than the sum of its proper divisors (285681240833840).

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

215320435640560 is a wasteful number, since it uses less digits than its factorization.

215320435640560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204386 (or 204380 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 46.

The spelling of 215320435640560 in words is "two hundred fifteen trillion, three hundred twenty billion, four hundred thirty-five million, six hundred forty thousand, five hundred sixty".