117878753739 has 4 divisors (see below), whose sum is σ = 157171671656. Its totient is φ = 78585835824.

The previous prime is 117878753711. The next prime is 117878753753. The reversal of 117878753739 is 937357878711.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 117878753739 - 2⁷ = 117878753611 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 117878753739.

It is not an unprimeable number, because it can be changed into a prime (117878753539) 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, 19646458954 + ... + 19646458959.

It is an arithmetic number, because the mean of its divisors is an integer number (39292917914).

Almost surely, 2^117878753739 is an apocalyptic number.

117878753739 is a deficient number, since it is larger than the sum of its proper divisors (39292917917).

117878753739 is an equidigital number, since it uses as much as digits as its factorization.

117878753739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39292917916.

The product of its digits is 62233920, while the sum is 66.

The spelling of 117878753739 in words is "one hundred seventeen billion, eight hundred seventy-eight million, seven hundred fifty-three thousand, seven hundred thirty-nine".