31664867486 has 16 divisors (see below), whose sum is σ = 54285665280. Its totient is φ = 13569898680.

The previous prime is 31664867483. The next prime is 31664867491. The reversal of 31664867486 is 68476846613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31664867483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249371 + ... + 354281.

It is an arithmetic number, because the mean of its divisors is an integer number (3392854080).

Almost surely, 2^31664867486 is an apocalyptic number.

31664867486 is a deficient number, since it is larger than the sum of its proper divisors (22620797794).

31664867486 is a wasteful number, since it uses less digits than its factorization.

31664867486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126479.

The product of its digits is 27869184, while the sum is 59.

The spelling of 31664867486 in words is "thirty-one billion, six hundred sixty-four million, eight hundred sixty-seven thousand, four hundred eighty-six".