20251736056 has 16 divisors (see below), whose sum is σ = 38039459400. Its totient is φ = 10107880224.

The previous prime is 20251736051. The next prime is 20251736117. The reversal of 20251736056 is 65063715202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20251736051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2243691 + ... + 2252698.

Almost surely, 2^20251736056 is an apocalyptic number.

It is an amenable number.

20251736056 is a deficient number, since it is larger than the sum of its proper divisors (17787723344).

20251736056 is a wasteful number, since it uses less digits than its factorization.

20251736056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4496958 (or 4496954 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 37.

The spelling of 20251736056 in words is "twenty billion, two hundred fifty-one million, seven hundred thirty-six thousand, fifty-six".