117778653 has 12 divisors (see below), whose sum is σ = 177521760. Its totient is φ = 75105096.

The previous prime is 117778643. The next prime is 117778673. The reversal of 117778653 is 356877711.

It is not a de Polignac number, because 117778653 - 2⁶ = 117778589 is a prime.

It is a super-2 number, since 2×117778653² = 27743622204988818, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 117778599 and 117778608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117778603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 284283 + ... + 284696.

It is an arithmetic number, because the mean of its divisors is an integer number (14793480).

Almost surely, 2^117778653 is an apocalyptic number.

It is an amenable number.

117778653 is a deficient number, since it is larger than the sum of its proper divisors (59743107).

117778653 is a wasteful number, since it uses less digits than its factorization.

117778653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569008 (or 569005 counting only the distinct ones).

The product of its digits is 246960, while the sum is 45.

The square root of 117778653 is about 10852.5873873469. The cubic root of 117778653 is about 490.1799325307.

The spelling of 117778653 in words is "one hundred seventeen million, seven hundred seventy-eight thousand, six hundred fifty-three".