431664987677 has 48 divisors (see below), whose sum is σ = 552900007296. Its totient is φ = 329769897600.

The previous prime is 431664987667. The next prime is 431664987703. The reversal of 431664987677 is 776789466134.

It is not a de Polignac number, because 431664987677 - 2⁴ = 431664987661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431664987667) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 80217527 + ... + 80222907.

It is an arithmetic number, because the mean of its divisors is an integer number (11518750152).

Almost surely, 2^431664987677 is an apocalyptic number.

It is an amenable number.

431664987677 is a deficient number, since it is larger than the sum of its proper divisors (121235019619).

431664987677 is a wasteful number, since it uses less digits than its factorization.

431664987677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7250 (or 7239 counting only the distinct ones).

The product of its digits is 256048128, while the sum is 68.

The spelling of 431664987677 in words is "four hundred thirty-one billion, six hundred sixty-four million, nine hundred eighty-seven thousand, six hundred seventy-seven".