117721708740 has 72 divisors (see below), whose sum is σ = 357118321560. Its totient is φ = 31389894144.

The previous prime is 117721708739. The next prime is 117721708759. The reversal of 117721708740 is 47807127711.

It can be written as a sum of positive squares in 4 ways, for example, as 78700447296 + 39021261444 = 280536^2 + 197538^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3415272 + ... + 3449568.

Almost surely, 2^117721708740 is an apocalyptic number.

117721708740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117721708740 is an abundant number, since it is smaller than the sum of its proper divisors (239396612820).

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

117721708740 is a wasteful number, since it uses less digits than its factorization.

117721708740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53381 (or 53376 counting only the distinct ones).

The product of its (nonzero) digits is 153664, while the sum is 45.

The spelling of 117721708740 in words is "one hundred seventeen billion, seven hundred twenty-one million, seven hundred eight thousand, seven hundred forty".