117973437977 has 4 divisors (see below), whose sum is σ = 118004659920. Its totient is φ = 117942216036.

The previous prime is 117973437973. The next prime is 117973438001. The reversal of 117973437977 is 779734379711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 117973437977 - 2² = 117973437973 is a prime.

It is a super-2 number, since 2×117973437977² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117973437973) 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, 15605303 + ... + 15612860.

It is an arithmetic number, because the mean of its divisors is an integer number (29501164980).

Almost surely, 2^117973437977 is an apocalyptic number.

It is an amenable number.

117973437977 is a deficient number, since it is larger than the sum of its proper divisors (31221943).

117973437977 is an equidigital number, since it uses as much as digits as its factorization.

117973437977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31221942.

The product of its digits is 49009212, while the sum is 65.

The spelling of 117973437977 in words is "one hundred seventeen billion, nine hundred seventy-three million, four hundred thirty-seven thousand, nine hundred seventy-seven".