31772080617985 has 32 divisors (see below), whose sum is σ = 40825021766400. Its totient is φ = 23652439050240.

The previous prime is 31772080617869. The next prime is 31772080618133. The reversal of 31772080617985 is 58971608027713.

It is a de Polignac number, because none of the positive numbers 2^k-31772080617985 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 153912690 + ... + 154118980.

It is an arithmetic number, because the mean of its divisors is an integer number (1275781930200).

Almost surely, 2^{31772080617985} is an apocalyptic number.

It is an amenable number.

31772080617985 is a deficient number, since it is larger than the sum of its proper divisors (9052941148415).

31772080617985 is a wasteful number, since it uses less digits than its factorization.

31772080617985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226761.

The product of its (nonzero) digits is 35562240, while the sum is 64.

The spelling of 31772080617985 in words is "thirty-one trillion, seven hundred seventy-two billion, eighty million, six hundred seventeen thousand, nine hundred eighty-five".