117976081 has 2 divisors, whose sum is σ = 117976082. Its totient is φ = 117976080.

The previous prime is 117976057. The next prime is 117976121. The reversal of 117976081 is 180679711.

It is an a-pointer prime, because the next prime (117976121) can be obtained adding 117976081 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117939600 + 36481 = 10860^2 + 191^2 .

It is an emirp because it is prime and its reverse (180679711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117976081 - 2⁹ = 117975569 is a prime.

It is a super-2 number, since 2×117976081² = 27836711376237122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (117976021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58988040 + 58988041.

It is an arithmetic number, because the mean of its divisors is an integer number (58988041).

Almost surely, 2^117976081 is an apocalyptic number.

It is an amenable number.

117976081 is a deficient number, since it is larger than the sum of its proper divisors (1).

117976081 is an equidigital number, since it uses as much as digits as its factorization.

117976081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 40.

The square root of 117976081 is about 10861.6794741881. The cubic root of 117976081 is about 490.4536697996.

The spelling of 117976081 in words is "one hundred seventeen million, nine hundred seventy-six thousand, eighty-one".