117142935381081 has 27 divisors (see below), whose sum is σ = 169413312616821. Its totient is φ = 77999937342264.

The previous prime is 117142935381079. The next prime is 117142935381089. The reversal of 117142935381081 is 180183539241711.

It is a happy number.

The square root of 117142935381081 is 10823259.

It is a perfect power (a square), and thus also a powerful number.

117142935381081 is a `hidden beast` number, since 1 + 1 + 7 + 1 + 4 + 2 + 93 + 538 + 10 + 8 + 1 = 666.

It is not a de Polignac number, because 117142935381081 - 2¹ = 117142935381079 is a prime.

It is a super-2 number, since 2×117142935381081² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (117142935381089) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 35294645940 + ... + 35294649258.

Almost surely, 2^{117142935381081} is an apocalyptic number.

117142935381081 is the 10823259-th square number.

117142935381081 is the 5411630-th centered octagonal number.

It is an amenable number.

117142935381081 is a deficient number, since it is larger than the sum of its proper divisors (52270377235740).

117142935381081 is an frugal number, since it uses more digits than its factorization.

117142935381081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8818 (or 4409 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 54.

The spelling of 117142935381081 in words is "one hundred seventeen trillion, one hundred forty-two billion, nine hundred thirty-five million, three hundred eighty-one thousand, eighty-one".