117772811 has 16 divisors (see below), whose sum is σ = 139319040. Its totient is φ = 98508960.

The previous prime is 117772807. The next prime is 117772817. The reversal of 117772811 is 118277711.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 117772811 - 2² = 117772807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117772817) 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, 4685 + ... + 16046.

It is an arithmetic number, because the mean of its divisors is an integer number (8707440).

Almost surely, 2^117772811 is an apocalyptic number.

117772811 is a deficient number, since it is larger than the sum of its proper divisors (21546229).

117772811 is a wasteful number, since it uses less digits than its factorization.

117772811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20786.

The product of its digits is 5488, while the sum is 35.

The square root of 117772811 is about 10852.3182316038. The cubic root of 117772811 is about 490.1718278404.

The spelling of 117772811 in words is "one hundred seventeen million, seven hundred seventy-two thousand, eight hundred eleven".