216977080331 has 24 divisors (see below), whose sum is σ = 239231622000. Its totient is φ = 196644127680.

The previous prime is 216977080321. The next prime is 216977080393. The reversal of 216977080331 is 133080779612.

It is not a de Polignac number, because 216977080331 - 2²² = 216972886027 is a prime.

It is a super-2 number, since 2×216977080331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216977080321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62009420 + ... + 62012918.

It is an arithmetic number, because the mean of its divisors is an integer number (9967984250).

Almost surely, 2^216977080331 is an apocalyptic number.

216977080331 is a deficient number, since it is larger than the sum of its proper divisors (22254541669).

216977080331 is a wasteful number, since it uses less digits than its factorization.

216977080331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4955 (or 4944 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 47.

The spelling of 216977080331 in words is "two hundred sixteen billion, nine hundred seventy-seven million, eighty thousand, three hundred thirty-one".