117311551761 has 32 divisors (see below), whose sum is σ = 162241689600. Its totient is φ = 75348225216.

The previous prime is 117311551757. The next prime is 117311551771. The reversal of 117311551761 is 167155113711.

It is not a de Polignac number, because 117311551761 - 2² = 117311551757 is a prime.

It is a super-2 number, since 2×117311551761² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (117311551711) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16878315 + ... + 16885263.

It is an arithmetic number, because the mean of its divisors is an integer number (5070052800).

Almost surely, 2^117311551761 is an apocalyptic number.

It is an amenable number.

117311551761 is a deficient number, since it is larger than the sum of its proper divisors (44930137839).

117311551761 is a wasteful number, since it uses less digits than its factorization.

117311551761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8853.

The product of its digits is 22050, while the sum is 39.

The spelling of 117311551761 in words is "one hundred seventeen billion, three hundred eleven million, five hundred fifty-one thousand, seven hundred sixty-one".