215634542634460 has 12 divisors (see below), whose sum is σ = 452832539532408. Its totient is φ = 86253817053776.

The previous prime is 215634542634457. The next prime is 215634542634559. The reversal of 215634542634460 is 64436245436512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5390863565842 + ... + 5390863565881.

It is an arithmetic number, because the mean of its divisors is an integer number (37736044961034).

Almost surely, 2^{215634542634460} is an apocalyptic number.

215634542634460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215634542634460 is an abundant number, since it is smaller than the sum of its proper divisors (237197996897948).

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

215634542634460 is a wasteful number, since it uses less digits than its factorization.

215634542634460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10781727131732 (or 10781727131730 counting only the distinct ones).

The product of its (nonzero) digits is 49766400, while the sum is 55.

The spelling of 215634542634460 in words is "two hundred fifteen trillion, six hundred thirty-four billion, five hundred forty-two million, six hundred thirty-four thousand, four hundred sixty".