23120553257 has 2 divisors, whose sum is σ = 23120553258. Its totient is φ = 23120553256.

The previous prime is 23120553227. The next prime is 23120553319. The reversal of 23120553257 is 75235502132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22290191401 + 830361856 = 149299^2 + 28816^2 .

It is a cyclic number.

It is not a de Polignac number, because 23120553257 - 2²⁸ = 22852117801 is a prime.

It is not a weakly prime, because it can be changed into another prime (23120553217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11560276628 + 11560276629.

It is an arithmetic number, because the mean of its divisors is an integer number (11560276629).

Almost surely, 2^23120553257 is an apocalyptic number.

It is an amenable number.

23120553257 is a deficient number, since it is larger than the sum of its proper divisors (1).

23120553257 is an equidigital number, since it uses as much as digits as its factorization.

23120553257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63000, while the sum is 35.

The spelling of 23120553257 in words is "twenty-three billion, one hundred twenty million, five hundred fifty-three thousand, two hundred fifty-seven".