20375100457 has 16 divisors (see below), whose sum is σ = 21975500880. Its totient is φ = 18822504448.

The previous prime is 20375100341. The next prime is 20375100479. The reversal of 20375100457 is 75400157302.

It can be written as a sum of positive squares in 8 ways, for example, as 780420096 + 19594680361 = 27936^2 + 139981^2 .

It is a de Polignac number, because none of the positive numbers 2^k-20375100457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20375100157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158133 + ... + 256429.

It is an arithmetic number, because the mean of its divisors is an integer number (1373468805).

Almost surely, 2^20375100457 is an apocalyptic number.

It is an amenable number.

20375100457 is a deficient number, since it is larger than the sum of its proper divisors (1600400423).

20375100457 is a wasteful number, since it uses less digits than its factorization.

20375100457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98540.

The product of its (nonzero) digits is 29400, while the sum is 34.

Adding to 20375100457 its reverse (75400157302), we get a palindrome (95775257759).

The spelling of 20375100457 in words is "twenty billion, three hundred seventy-five million, one hundred thousand, four hundred fifty-seven".