31773297852064 has 96 divisors (see below), whose sum is σ = 66188230027920. Its totient is φ = 14990857469952.

The previous prime is 31773297852007. The next prime is 31773297852083. The reversal of 31773297852064 is 46025879237713.

It can be written as a sum of positive squares in 8 ways, for example, as 25811398962064 + 5961898890000 = 5080492^2 + 2441700^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31773297851987 and 31773297852005.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11383462 + ... + 13897114.

It is a 2-persistent number, because it is pandigital, and so is 2⋅31773297852064 = 63546595704128, but 3⋅31773297852064 = 95319893556192 is not.

Almost surely, 2^{31773297852064} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31773297852064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33094115013960).

31773297852064 is an abundant number, since it is smaller than the sum of its proper divisors (34414932175856).

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

31773297852064 is a wasteful number, since it uses less digits than its factorization.

31773297852064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2514002 (or 2513994 counting only the distinct ones).

The product of its (nonzero) digits is 106686720, while the sum is 64.

The spelling of 31773297852064 in words is "thirty-one trillion, seven hundred seventy-three billion, two hundred ninety-seven million, eight hundred fifty-two thousand, sixty-four".