117645378674 has 4 divisors (see below), whose sum is σ = 176468068014. Its totient is φ = 58822689336.

The previous prime is 117645378667. The next prime is 117645378679. The reversal of 117645378674 is 476873546711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 476873546711 = 79 ⋅6036374009.

It can be written as a sum of positive squares in only one way, i.e., 100715465449 + 16929913225 = 317357^2 + 130115^2 .

It is not an unprimeable number, because it can be changed into a prime (117645378679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29411344667 + ... + 29411344670.

Almost surely, 2^117645378674 is an apocalyptic number.

117645378674 is a deficient number, since it is larger than the sum of its proper divisors (58822689340).

117645378674 is an equidigital number, since it uses as much as digits as its factorization.

117645378674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58822689339.

The product of its digits is 23708160, while the sum is 59.

The spelling of 117645378674 in words is "one hundred seventeen billion, six hundred forty-five million, three hundred seventy-eight thousand, six hundred seventy-four".