123372270557 has 2 divisors, whose sum is σ = 123372270558. Its totient is φ = 123372270556.

The previous prime is 123372270551. The next prime is 123372270559. The reversal of 123372270557 is 755072273321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112291339801 + 11080930756 = 335099^2 + 105266^2 .

It is a cyclic number.

It is not a de Polignac number, because 123372270557 - 2¹⁰ = 123372269533 is a prime.

Together with 123372270559, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123372270551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61686135278 + 61686135279.

It is an arithmetic number, because the mean of its divisors is an integer number (61686135279).

Almost surely, 2^123372270557 is an apocalyptic number.

It is an amenable number.

123372270557 is a deficient number, since it is larger than the sum of its proper divisors (1).

123372270557 is an equidigital number, since it uses as much as digits as its factorization.

123372270557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 617400, while the sum is 44.

The spelling of 123372270557 in words is "one hundred twenty-three billion, three hundred seventy-two million, two hundred seventy thousand, five hundred fifty-seven".