7666721835652 has 12 divisors (see below), whose sum is σ = 14636468959056. Its totient is φ = 3484873561640.

The previous prime is 7666721835629. The next prime is 7666721835673. The reversal of 7666721835652 is 2565381276667.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87121838998 + ... + 87121839085.

It is an arithmetic number, because the mean of its divisors is an integer number (1219705746588).

Almost surely, 2^{7666721835652} is an apocalyptic number.

It is an amenable number.

7666721835652 is a deficient number, since it is larger than the sum of its proper divisors (6969747123404).

7666721835652 is a wasteful number, since it uses less digits than its factorization.

7666721835652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174243678098 (or 174243678096 counting only the distinct ones).

The product of its digits is 152409600, while the sum is 64.

The spelling of 7666721835652 in words is "seven trillion, six hundred sixty-six billion, seven hundred twenty-one million, eight hundred thirty-five thousand, six hundred fifty-two".