218056300855915 has 16 divisors (see below), whose sum is σ = 270918626568480. Its totient is φ = 168287799043840.

The previous prime is 218056300855907. The next prime is 218056300855927. The reversal of 218056300855915 is 519558003650812.

It is not a de Polignac number, because 218056300855915 - 2³ = 218056300855907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 218056300855915.

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, 633288946 + ... + 633633175.

It is an arithmetic number, because the mean of its divisors is an integer number (16932414160530).

Almost surely, 2^{218056300855915} is an apocalyptic number.

218056300855915 is a deficient number, since it is larger than the sum of its proper divisors (52862325712565).

218056300855915 is a wasteful number, since it uses less digits than its factorization.

218056300855915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266923342.

The product of its (nonzero) digits is 12960000, while the sum is 58.

The spelling of 218056300855915 in words is "two hundred eighteen trillion, fifty-six billion, three hundred million, eight hundred fifty-five thousand, nine hundred fifteen".