122653765557 has 12 divisors (see below), whose sum is σ = 177175840140. Its totient is φ = 81764889408.

The previous prime is 122653765547. The next prime is 122653765561. The reversal of 122653765557 is 755567356221.

122653765557 is a `hidden beast` number, since 1 + 2 + 2 + 6 + 537 + 6 + 55 + 57 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 101607300081 + 21046465476 = 318759^2 + 145074^2 .

It is not a de Polignac number, because 122653765557 - 2⁸ = 122653765301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122653765547) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 171018 + ... + 523979.

It is an arithmetic number, because the mean of its divisors is an integer number (14764653345).

Almost surely, 2^122653765557 is an apocalyptic number.

It is an amenable number.

122653765557 is a deficient number, since it is larger than the sum of its proper divisors (54522074583).

122653765557 is a wasteful number, since it uses less digits than its factorization.

122653765557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714612 (or 714609 counting only the distinct ones).

The product of its digits is 13230000, while the sum is 54.

The spelling of 122653765557 in words is "one hundred twenty-two billion, six hundred fifty-three million, seven hundred sixty-five thousand, five hundred fifty-seven".