20307446056 has 32 divisors (see below), whose sum is σ = 38439815040. Its totient is φ = 10056953088.

The previous prime is 20307446053. The next prime is 20307446119. The reversal of 20307446056 is 65064470302.

It is not an unprimeable number, because it can be changed into a prime (20307446053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1463905 + ... + 1477711.

It is an arithmetic number, because the mean of its divisors is an integer number (1201244220).

Almost surely, 2^20307446056 is an apocalyptic number.

It is an amenable number.

20307446056 is a deficient number, since it is larger than the sum of its proper divisors (18132368984).

20307446056 is a wasteful number, since it uses less digits than its factorization.

20307446056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15553 (or 15549 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 37.

The spelling of 20307446056 in words is "twenty billion, three hundred seven million, four hundred forty-six thousand, fifty-six".