117778801 has 12 divisors (see below), whose sum is σ = 137328048. Its totient is φ = 100717512.

The previous prime is 117778789. The next prime is 117778819. The reversal of 117778801 is 108877711.

It is not a de Polignac number, because 117778801 - 2⁵ = 117778769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117778841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20310 + ... + 25456.

It is an arithmetic number, because the mean of its divisors is an integer number (11444004).

Almost surely, 2^117778801 is an apocalyptic number.

It is an amenable number.

117778801 is a deficient number, since it is larger than the sum of its proper divisors (19549247).

117778801 is an equidigital number, since it uses as much as digits as its factorization.

117778801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5628 (or 5621 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 40.

The square root of 117778801 is about 10852.5942059952. The cubic root of 117778801 is about 490.1801378498.

The spelling of 117778801 in words is "one hundred seventeen million, seven hundred seventy-eight thousand, eight hundred one".