117405235657 has 2 divisors, whose sum is σ = 117405235658. Its totient is φ = 117405235656.

The previous prime is 117405235567. The next prime is 117405235669. The reversal of 117405235657 is 756532504711.

Together with previous prime (117405235567) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74239355961 + 43165879696 = 272469^2 + 207764^2 .

It is a cyclic number.

It is not a de Polignac number, because 117405235657 - 2³¹ = 115257752009 is a prime.

It is not a weakly prime, because it can be changed into another prime (117405215657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58702617828 + 58702617829.

It is an arithmetic number, because the mean of its divisors is an integer number (58702617829).

Almost surely, 2^117405235657 is an apocalyptic number.

It is an amenable number.

117405235657 is a deficient number, since it is larger than the sum of its proper divisors (1).

117405235657 is an equidigital number, since it uses as much as digits as its factorization.

117405235657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 882000, while the sum is 46.

The spelling of 117405235657 in words is "one hundred seventeen billion, four hundred five million, two hundred thirty-five thousand, six hundred fifty-seven".