117977322661 has 8 divisors (see below), whose sum is σ = 128937828384. Its totient is φ = 107056032720.

The previous prime is 117977322643. The next prime is 117977322679. The reversal of 117977322661 is 166223779711.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (117977322643) and next prime (117977322679).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 117977322661 - 2²¹ = 117975225509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 117977322599 and 117977322608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117977322641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9797650 + ... + 9809683.

It is an arithmetic number, because the mean of its divisors is an integer number (16117228548).

Almost surely, 2^117977322661 is an apocalyptic number.

117977322661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

117977322661 is a deficient number, since it is larger than the sum of its proper divisors (10960505723).

117977322661 is a wasteful number, since it uses less digits than its factorization.

117977322661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19607891.

The product of its digits is 1333584, while the sum is 52.

The spelling of 117977322661 in words is "one hundred seventeen billion, nine hundred seventy-seven million, three hundred twenty-two thousand, six hundred sixty-one".