20666752016684 has 24 divisors (see below), whose sum is σ = 37755083798880. Its totient is φ = 9879961348224.

The previous prime is 20666752016609. The next prime is 20666752016737. The reversal of 20666752016684 is 48661025766602.

It is a super-2 number, since 2×20666752016684² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46795409 + ... + 47234984.

It is an arithmetic number, because the mean of its divisors is an integer number (1573128491620).

Almost surely, 2^{20666752016684} is an apocalyptic number.

It is an amenable number.

20666752016684 is a deficient number, since it is larger than the sum of its proper divisors (17088331782196).

20666752016684 is a wasteful number, since it uses less digits than its factorization.

20666752016684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94032809 (or 94032807 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 59.

The spelling of 20666752016684 in words is "twenty trillion, six hundred sixty-six billion, seven hundred fifty-two million, sixteen thousand, six hundred eighty-four".