21134556360115 has 32 divisors (see below), whose sum is σ = 29318674464000. Its totient is φ = 14463879189120.

The previous prime is 21134556360097. The next prime is 21134556360131. The reversal of 21134556360115 is 51106365543112.

It is a de Polignac number, because none of the positive numbers 2^k-21134556360115 is a prime.

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, 67711597 + ... + 68023006.

It is an arithmetic number, because the mean of its divisors is an integer number (916208577000).

Almost surely, 2^{21134556360115} is an apocalyptic number.

21134556360115 is a deficient number, since it is larger than the sum of its proper divisors (8184118103885).

21134556360115 is a wasteful number, since it uses less digits than its factorization.

21134556360115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135734787.

The product of its (nonzero) digits is 324000, while the sum is 43.

The spelling of 21134556360115 in words is "twenty-one trillion, one hundred thirty-four billion, five hundred fifty-six million, three hundred sixty thousand, one hundred fifteen".