215051253604120 has 128 divisors (see below), whose sum is σ = 486224541000000. Its totient is φ = 85602202583040.

The previous prime is 215051253604069. The next prime is 215051253604189. The reversal of 215051253604120 is 21406352150512.

It is a self number, because there is not a number n which added to its sum of digits gives 215051253604120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17082466786 + ... + 17082479374.

Almost surely, 2^{215051253604120} is an apocalyptic number.

215051253604120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215051253604120 is an abundant number, since it is smaller than the sum of its proper divisors (271173287395880).

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

215051253604120 is a wasteful number, since it uses less digits than its factorization.

215051253604120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15213 (or 15209 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 37.

The spelling of 215051253604120 in words is "two hundred fifteen trillion, fifty-one billion, two hundred fifty-three million, six hundred four thousand, one hundred twenty".