3240656031568 has 20 divisors (see below), whose sum is σ = 6278925662100. Its totient is φ = 1620288118784.

The previous prime is 3240656031563. The next prime is 3240656031581. The reversal of 3240656031568 is 8651306560423.

It can be written as a sum of positive squares in 2 ways, for example, as 2707446466624 + 533209564944 = 1645432^2 + 730212^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3240656031563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1817905 + ... + 3128272.

It is an arithmetic number, because the mean of its divisors is an integer number (313946283105).

Almost surely, 2^{3240656031568} is an apocalyptic number.

It is an amenable number.

3240656031568 is a deficient number, since it is larger than the sum of its proper divisors (3038269630532).

3240656031568 is a wasteful number, since it uses less digits than its factorization.

3240656031568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4987134 (or 4987128 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 49.

The spelling of 3240656031568 in words is "three trillion, two hundred forty billion, six hundred fifty-six million, thirty-one thousand, five hundred sixty-eight".