31779934764 has 12 divisors (see below), whose sum is σ = 74153181144. Its totient is φ = 10593311584.

The previous prime is 31779934729. The next prime is 31779934777. The reversal of 31779934764 is 46743997713.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 31779934698 and 31779934707.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1324163937 + ... + 1324163960.

It is an arithmetic number, because the mean of its divisors is an integer number (6179431762).

Almost surely, 2^31779934764 is an apocalyptic number.

It is an amenable number.

31779934764 is an abundant number, since it is smaller than the sum of its proper divisors (42373246380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31779934764 is a wasteful number, since it uses less digits than its factorization.

31779934764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2648327904 (or 2648327902 counting only the distinct ones).

The product of its digits is 24004512, while the sum is 60.

The spelling of 31779934764 in words is "thirty-one billion, seven hundred seventy-nine million, nine hundred thirty-four thousand, seven hundred sixty-four".