117561671680 has 60 divisors (see below), whose sum is σ = 282139598160. Its totient is φ = 47024635904.

The previous prime is 117561671629. The next prime is 117561671681. The reversal of 117561671680 is 86176165711.

It is a super-2 number, since 2×117561671680² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (117561671681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 635620 + ... + 799459.

It is an arithmetic number, because the mean of its divisors is an integer number (4702326636).

Almost surely, 2^117561671680 is an apocalyptic number.

117561671680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117561671680 is an abundant number, since it is smaller than the sum of its proper divisors (164577926480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117561671680 is an frugal number, since it uses more digits than its factorization.

117561671680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1435112 (or 1435086 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 49.

The spelling of 117561671680 in words is "one hundred seventeen billion, five hundred sixty-one million, six hundred seventy-one thousand, six hundred eighty".