20437316975 has 12 divisors (see below), whose sum is σ = 25627020480. Its totient is φ = 16166145600.

The previous prime is 20437316971. The next prime is 20437316987. The reversal of 20437316975 is 57961373402.

It is not a de Polignac number, because 20437316975 - 2² = 20437316971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20437316971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4590431 + ... + 4594880.

It is an arithmetic number, because the mean of its divisors is an integer number (2135585040).

Almost surely, 2^20437316975 is an apocalyptic number.

20437316975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20437316975 is a deficient number, since it is larger than the sum of its proper divisors (5189703505).

20437316975 is an equidigital number, since it uses as much as digits as its factorization.

20437316975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9185410 (or 9185405 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 47.

The spelling of 20437316975 in words is "twenty billion, four hundred thirty-seven million, three hundred sixteen thousand, nine hundred seventy-five".