31764199938769 has 8 divisors (see below), whose sum is σ = 32791721327720. Its totient is φ = 30745574839296.

The previous prime is 31764199938697. The next prime is 31764199938817. The reversal of 31764199938769 is 96783999146713.

It can be written as a sum of positive squares in 4 ways, for example, as 10787204534544 + 20976995404225 = 3284388^2 + 4580065^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31764199938769 - 2⁹ = 31764199938257 is a prime.

It is a super-2 number, since 2×31764199938769² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31764199938692 and 31764199938701.

It is not an unprimeable number, because it can be changed into a prime (31764199938169) 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, 2224065114 + ... + 2224079395.

It is an arithmetic number, because the mean of its divisors is an integer number (4098965165965).

Almost surely, 2^{31764199938769} is an apocalyptic number.

It is an amenable number.

31764199938769 is a deficient number, since it is larger than the sum of its proper divisors (1027521388951).

31764199938769 is a wasteful number, since it uses less digits than its factorization.

31764199938769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4448144739.

The product of its digits is 3333197952, while the sum is 82.

The spelling of 31764199938769 in words is "thirty-one trillion, seven hundred sixty-four billion, one hundred ninety-nine million, nine hundred thirty-eight thousand, seven hundred sixty-nine".