20101651032056 has 64 divisors (see below), whose sum is σ = 41186548206720. Its totient is φ = 9121675086720.

The previous prime is 20101651032049. The next prime is 20101651032083. The reversal of 20101651032056 is 65023015610102.

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, 124062311 + ... + 124224233.

It is an arithmetic number, because the mean of its divisors is an integer number (643539815730).

Almost surely, 2^{20101651032056} is an apocalyptic number.

It is an amenable number.

20101651032056 is an abundant number, since it is smaller than the sum of its proper divisors (21084897174664).

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

20101651032056 is a wasteful number, since it uses less digits than its factorization.

20101651032056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164316 (or 164312 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

Adding to 20101651032056 its reverse (65023015610102), we get a palindrome (85124666642158).

The spelling of 20101651032056 in words is "twenty trillion, one hundred one billion, six hundred fifty-one million, thirty-two thousand, fifty-six".