117137778 has 16 divisors (see below), whose sum is σ = 241833216. Its totient is φ = 37786320.

The previous prime is 117137767. The next prime is 117137789. The reversal of 117137778 is 877731711.

It is an interprime number because it is at equal distance from previous prime (117137767) and next prime (117137789).

It is a super-3 number, since 3×117137778³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 314701 + ... + 315072.

It is an arithmetic number, because the mean of its divisors is an integer number (15114576).

Almost surely, 2^117137778 is an apocalyptic number.

117137778 is an abundant number, since it is smaller than the sum of its proper divisors (124695438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117137778 is a wasteful number, since it uses less digits than its factorization.

117137778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629809.

The product of its digits is 57624, while the sum is 42.

The square root of 117137778 is about 10823.0207428425. The cubic root of 117137778 is about 489.2892346712.

It can be divided in two parts, 11713 and 7778, that added together give a palindrome (19491).

The spelling of 117137778 in words is "one hundred seventeen million, one hundred thirty-seven thousand, seven hundred seventy-eight".