122553255717 has 20 divisors (see below), whose sum is σ = 183097817100. Its totient is φ = 81691265664.

The previous prime is 122553255709. The next prime is 122553255763. The reversal of 122553255717 is 717552355221.

122553255717 is a `hidden beast` number, since 1 + 2 + 2 + 5 + 53 + 25 + 571 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 54121834881 + 68431420836 = 232641^2 + 261594^2 .

It is not a de Polignac number, because 122553255717 - 2³ = 122553255709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122553265717) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 534159 + ... + 728307.

It is an arithmetic number, because the mean of its divisors is an integer number (9154890855).

Almost surely, 2^122553255717 is an apocalyptic number.

It is an amenable number.

122553255717 is a deficient number, since it is larger than the sum of its proper divisors (60544561383).

122553255717 is an equidigital number, since it uses as much as digits as its factorization.

122553255717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201954 (or 201945 counting only the distinct ones).

The product of its digits is 735000, while the sum is 45.

The spelling of 122553255717 in words is "one hundred twenty-two billion, five hundred fifty-three million, two hundred fifty-five thousand, seven hundred seventeen".