117646576081 has 2 divisors, whose sum is σ = 117646576082. Its totient is φ = 117646576080.

The previous prime is 117646576057. The next prime is 117646576153. The reversal of 117646576081 is 180675646711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108164685456 + 9481890625 = 328884^2 + 97375^2 .

It is a cyclic number.

It is not a de Polignac number, because 117646576081 - 2⁷ = 117646575953 is a prime.

It is a super-2 number, since 2×117646576081² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (117646576051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58823288040 + 58823288041.

It is an arithmetic number, because the mean of its divisors is an integer number (58823288041).

Almost surely, 2^117646576081 is an apocalyptic number.

It is an amenable number.

117646576081 is a deficient number, since it is larger than the sum of its proper divisors (1).

117646576081 is an equidigital number, since it uses as much as digits as its factorization.

117646576081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1693440, while the sum is 52.

The spelling of 117646576081 in words is "one hundred seventeen billion, six hundred forty-six million, five hundred seventy-six thousand, eighty-one".