20307446057 has 8 divisors (see below), whose sum is σ = 20596447872. Its totient is φ = 20018527200.

The previous prime is 20307446053. The next prime is 20307446119. The reversal of 20307446057 is 75064470302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20307446057 - 2² = 20307446053 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20307446057.

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, 605708 + ... + 638354.

It is an arithmetic number, because the mean of its divisors is an integer number (2574555984).

Almost surely, 2^20307446057 is an apocalyptic number.

It is an amenable number.

20307446057 is a deficient number, since it is larger than the sum of its proper divisors (289001815).

20307446057 is an equidigital number, since it uses as much as digits as its factorization.

20307446057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41479.

The product of its (nonzero) digits is 141120, while the sum is 38.

The spelling of 20307446057 in words is "twenty billion, three hundred seven million, four hundred forty-six thousand, fifty-seven".