23509204937 has 2 divisors, whose sum is σ = 23509204938. Its totient is φ = 23509204936.

The previous prime is 23509204909. The next prime is 23509205009. The reversal of 23509204937 is 73940290532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23352729856 + 156475081 = 152816^2 + 12509^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23509204937 is a prime.

It is not a weakly prime, because it can be changed into another prime (23509204637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11754602468 + 11754602469.

It is an arithmetic number, because the mean of its divisors is an integer number (11754602469).

Almost surely, 2^23509204937 is an apocalyptic number.

It is an amenable number.

23509204937 is a deficient number, since it is larger than the sum of its proper divisors (1).

23509204937 is an equidigital number, since it uses as much as digits as its factorization.

23509204937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 408240, while the sum is 44.

The spelling of 23509204937 in words is "twenty-three billion, five hundred nine million, two hundred four thousand, nine hundred thirty-seven".