123470755657 has 2 divisors, whose sum is σ = 123470755658. Its totient is φ = 123470755656.

The previous prime is 123470755649. The next prime is 123470755663. The reversal of 123470755657 is 756557074321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117354890041 + 6115865616 = 342571^2 + 78204^2 .

It is a cyclic number.

It is not a de Polignac number, because 123470755657 - 2³ = 123470755649 is a prime.

It is not a weakly prime, because it can be changed into another prime (123470755157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61735377828 + 61735377829.

It is an arithmetic number, because the mean of its divisors is an integer number (61735377829).

Almost surely, 2^123470755657 is an apocalyptic number.

It is an amenable number.

123470755657 is a deficient number, since it is larger than the sum of its proper divisors (1).

123470755657 is an equidigital number, since it uses as much as digits as its factorization.

123470755657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6174000, while the sum is 52.

The spelling of 123470755657 in words is "one hundred twenty-three billion, four hundred seventy million, seven hundred fifty-five thousand, six hundred fifty-seven".