218660410080431 has 12 divisors (see below), whose sum is σ = 240348785933592. Its totient is φ = 198779671794000.

The previous prime is 218660410080419. The next prime is 218660410080467. The reversal of 218660410080431 is 134080014066812.

It is a de Polignac number, because none of the positive numbers 2^k-218660410080431 is a prime.

It is a super-2 number, since 2×218660410080431² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218660410080481) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1830365 + ... + 20992166.

It is an arithmetic number, because the mean of its divisors is an integer number (20029065494466).

Almost surely, 2^{218660410080431} is an apocalyptic number.

218660410080431 is a deficient number, since it is larger than the sum of its proper divisors (21688375853161).

218660410080431 is a wasteful number, since it uses less digits than its factorization.

218660410080431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22901734 (or 22901723 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 44.

The spelling of 218660410080431 in words is "two hundred eighteen trillion, six hundred sixty billion, four hundred ten million, eighty thousand, four hundred thirty-one".