20707553615764 has 48 divisors (see below), whose sum is σ = 36964130426496. Its totient is φ = 10146826684800.

The previous prime is 20707553615743. The next prime is 20707553615773. The reversal of 20707553615764 is 46751635570702.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 20707553615699 and 20707553615708.

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, 697890649 + ... + 697920319.

It is an arithmetic number, because the mean of its divisors is an integer number (770086050552).

Almost surely, 2^{20707553615764} is an apocalyptic number.

It is an amenable number.

20707553615764 is a deficient number, since it is larger than the sum of its proper divisors (16256576810732).

20707553615764 is a wasteful number, since it uses less digits than its factorization.

20707553615764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33376 (or 33374 counting only the distinct ones).

The product of its (nonzero) digits is 37044000, while the sum is 58.

The spelling of 20707553615764 in words is "twenty trillion, seven hundred seven billion, five hundred fifty-three million, six hundred fifteen thousand, seven hundred sixty-four".