20237080957 has 4 divisors (see below), whose sum is σ = 20244319036. Its totient is φ = 20229842880.

The previous prime is 20237080943. The next prime is 20237080987. The reversal of 20237080957 is 75908073202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15648508836 + 4588572121 = 125094^2 + 67739^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20237080957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20237080907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3614844 + ... + 3620437.

It is an arithmetic number, because the mean of its divisors is an integer number (5061079759).

Almost surely, 2^20237080957 is an apocalyptic number.

It is an amenable number.

20237080957 is a deficient number, since it is larger than the sum of its proper divisors (7238079).

20237080957 is an equidigital number, since it uses as much as digits as its factorization.

20237080957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7238078.

The product of its (nonzero) digits is 211680, while the sum is 43.

The spelling of 20237080957 in words is "twenty billion, two hundred thirty-seven million, eighty thousand, nine hundred fifty-seven".