20352664772056 has 16 divisors (see below), whose sum is σ = 38162319017040. Its totient is φ = 10176046367520.

The previous prime is 20352664772023. The next prime is 20352664772123. The reversal of 20352664772056 is 65027746625302.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20352664771988 and 20352664772006.

It is a congruent number.

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, 35449740 + ... + 36019291.

It is an arithmetic number, because the mean of its divisors is an integer number (2385144938565).

Almost surely, 2^{20352664772056} is an apocalyptic number.

It is an amenable number.

20352664772056 is a deficient number, since it is larger than the sum of its proper divisors (17809654244984).

20352664772056 is a wasteful number, since it uses less digits than its factorization.

20352664772056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71504634 (or 71504630 counting only the distinct ones).

The product of its (nonzero) digits is 25401600, while the sum is 55.

The spelling of 20352664772056 in words is "twenty trillion, three hundred fifty-two billion, six hundred sixty-four million, seven hundred seventy-two thousand, fifty-six".