6688725369564 has 48 divisors (see below), whose sum is σ = 18003298215168. Its totient is φ = 1893203973888.

The previous prime is 6688725369527. The next prime is 6688725369581. The reversal of 6688725369564 is 4659635278866.

It is a congruent number.

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, 372082989 + ... + 372100964.

It is an arithmetic number, because the mean of its divisors is an integer number (375068712816).

Almost surely, 2^{6688725369564} is an apocalyptic number.

It is an amenable number.

6688725369564 is an abundant number, since it is smaller than the sum of its proper divisors (11314572845604).

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

6688725369564 is a wasteful number, since it uses less digits than its factorization.

6688725369564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744184074 (or 744184072 counting only the distinct ones).

The product of its digits is 3135283200, while the sum is 75.

The spelling of 6688725369564 in words is "six trillion, six hundred eighty-eight billion, seven hundred twenty-five million, three hundred sixty-nine thousand, five hundred sixty-four".