20057204507 has 16 divisors (see below), whose sum is σ = 20851267584. Its totient is φ = 19272600000.

The previous prime is 20057204473. The next prime is 20057204543. The reversal of 20057204507 is 70540275002.

It is a cyclic number.

It is not a de Polignac number, because 20057204507 - 2⁶ = 20057204443 is a prime.

It is a super-2 number, since 2×20057204507² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20057204807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6682007 + ... + 6685007.

It is an arithmetic number, because the mean of its divisors is an integer number (1303204224).

Almost surely, 2^20057204507 is an apocalyptic number.

20057204507 is a deficient number, since it is larger than the sum of its proper divisors (794063077).

20057204507 is a wasteful number, since it uses less digits than its factorization.

20057204507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4490.

The product of its (nonzero) digits is 19600, while the sum is 32.

Adding to 20057204507 its reverse (70540275002), we get a palindrome (90597479509).

The spelling of 20057204507 in words is "twenty billion, fifty-seven million, two hundred four thousand, five hundred seven".