117631146647 has 4 divisors (see below), whose sum is σ = 134435596176. Its totient is φ = 100826697120.

The previous prime is 117631146643. The next prime is 117631146649. The reversal of 117631146647 is 746641136711.

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

It is a cyclic number.

It is not a de Polignac number, because 117631146647 - 2² = 117631146643 is a prime.

It is a super-2 number, since 2×117631146647² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117631146643) 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, 8402224754 + ... + 8402224767.

It is an arithmetic number, because the mean of its divisors is an integer number (33608899044).

Almost surely, 2^117631146647 is an apocalyptic number.

117631146647 is a deficient number, since it is larger than the sum of its proper divisors (16804449529).

117631146647 is an equidigital number, since it uses as much as digits as its factorization.

117631146647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16804449528.

The product of its digits is 508032, while the sum is 47.

The spelling of 117631146647 in words is "one hundred seventeen billion, six hundred thirty-one million, one hundred forty-six thousand, six hundred forty-seven".