117510533981 has 2 divisors, whose sum is σ = 117510533982. Its totient is φ = 117510533980.

The previous prime is 117510533977. The next prime is 117510534091. The reversal of 117510533981 is 189335015711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81073450756 + 36437083225 = 284734^2 + 190885^2 .

It is a cyclic number.

It is not a de Polignac number, because 117510533981 - 2² = 117510533977 is a prime.

It is a super-2 number, since 2×117510533981² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117510533681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58755266990 + 58755266991.

It is an arithmetic number, because the mean of its divisors is an integer number (58755266991).

Almost surely, 2^117510533981 is an apocalyptic number.

It is an amenable number.

117510533981 is a deficient number, since it is larger than the sum of its proper divisors (1).

117510533981 is an equidigital number, since it uses as much as digits as its factorization.

117510533981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 113400, while the sum is 44.

The spelling of 117510533981 in words is "one hundred seventeen billion, five hundred ten million, five hundred thirty-three thousand, nine hundred eighty-one".