117777647649 has 16 divisors (see below), whose sum is σ = 161534286144. Its totient is φ = 76300737600.

The previous prime is 117777647629. The next prime is 117777647671. The reversal of 117777647649 is 946746777711.

It is not a de Polignac number, because 117777647649 - 2¹³ = 117777639457 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 117777647649.

It is not an unprimeable number, because it can be changed into a prime (117777647629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3861882 + ... + 3892259.

It is an arithmetic number, because the mean of its divisors is an integer number (10095892884).

Almost surely, 2^117777647649 is an apocalyptic number.

It is an amenable number.

117777647649 is a deficient number, since it is larger than the sum of its proper divisors (43756638495).

117777647649 is an equidigital number, since it uses as much as digits as its factorization.

117777647649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7754288.

The product of its digits is 87127488, while the sum is 66.

The spelling of 117777647649 in words is "one hundred seventeen billion, seven hundred seventy-seven million, six hundred forty-seven thousand, six hundred forty-nine".