36688779666 has 48 divisors (see below), whose sum is σ = 99107356608. Its totient is φ = 9529552800.

The previous prime is 36688779649. The next prime is 36688779667. The reversal of 36688779666 is 66697788663.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 36688779594 and 36688779603.

It is not an unprimeable number, because it can be changed into a prime (36688779667) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13234105 + ... + 13236876.

It is an arithmetic number, because the mean of its divisors is an integer number (2064736596).

Almost surely, 2^36688779666 is an apocalyptic number.

36688779666 is an abundant number, since it is smaller than the sum of its proper divisors (62418576942).

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

36688779666 is a wasteful number, since it uses less digits than its factorization.

36688779666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26471007 (or 26471004 counting only the distinct ones).

The product of its digits is 658409472, while the sum is 72.

The spelling of 36688779666 in words is "thirty-six billion, six hundred eighty-eight million, seven hundred seventy-nine thousand, six hundred sixty-six".