117720551560 has 32 divisors (see below), whose sum is σ = 265086869400. Its totient is φ = 47049886720.

The previous prime is 117720551539. The next prime is 117720551677. The reversal of 117720551560 is 65155027711.

It can be written as a sum of positive squares in 4 ways, for example, as 115503460164 + 2217091396 = 339858^2 + 47086^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1148161 + ... + 1246480.

Almost surely, 2^117720551560 is an apocalyptic number.

117720551560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117720551560 is an abundant number, since it is smaller than the sum of its proper divisors (147366317840).

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

117720551560 is a wasteful number, since it uses less digits than its factorization.

117720551560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2395881 (or 2395877 counting only the distinct ones).

The product of its (nonzero) digits is 73500, while the sum is 40.

The spelling of 117720551560 in words is "one hundred seventeen billion, seven hundred twenty million, five hundred fifty-one thousand, five hundred sixty".