31642612666 has 16 divisors (see below), whose sum is σ = 55398617856. Its totient is φ = 13272584976.

The previous prime is 31642612613. The next prime is 31642612697. The reversal of 31642612666 is 66621624613.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24043881 + ... + 24045196.

It is an arithmetic number, because the mean of its divisors is an integer number (3462413616).

Almost surely, 2^31642612666 is an apocalyptic number.

31642612666 is a deficient number, since it is larger than the sum of its proper divisors (23756005190).

31642612666 is a wasteful number, since it uses less digits than its factorization.

31642612666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48089133.

The product of its digits is 373248, while the sum is 43.

The spelling of 31642612666 in words is "thirty-one billion, six hundred forty-two million, six hundred twelve thousand, six hundred sixty-six".