131618720998215 has 48 divisors (see below), whose sum is σ = 248928061707936. Its totient is φ = 63802566777600.

The previous prime is 131618720998207. The next prime is 131618720998223. The reversal of 131618720998215 is 512899027816131.

131618720998215 is a `hidden beast` number, since 1 + 3 + 1 + 618 + 7 + 2 + 0 + 9 + 9 + 8 + 2 + 1 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (131618720998207) and next prime (131618720998223).

It is not a de Polignac number, because 131618720998215 - 2³ = 131618720998207 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23673256 + ... + 28699485.

It is an arithmetic number, because the mean of its divisors is an integer number (5186001285582).

Almost surely, 2^{131618720998215} is an apocalyptic number.

131618720998215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131618720998215 is a deficient number, since it is larger than the sum of its proper divisors (117309340709721).

131618720998215 is a wasteful number, since it uses less digits than its factorization.

131618720998215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52377840 (or 52377837 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 63.

The spelling of 131618720998215 in words is "one hundred thirty-one trillion, six hundred eighteen billion, seven hundred twenty million, nine hundred ninety-eight thousand, two hundred fifteen".