11685877172 has 12 divisors (see below), whose sum is σ = 20474153700. Its totient is φ = 5836118976.

The previous prime is 11685877169. The next prime is 11685877213. The reversal of 11685877172 is 27177858611.

It can be written as a sum of positive squares in 2 ways, for example, as 5618401936 + 6067475236 = 74956^2 + 77894^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1701047 + ... + 1707902.

It is an arithmetic number, because the mean of its divisors is an integer number (1706179475).

Almost surely, 2^11685877172 is an apocalyptic number.

It is an amenable number.

11685877172 is a deficient number, since it is larger than the sum of its proper divisors (8788276528).

11685877172 is a wasteful number, since it uses less digits than its factorization.

11685877172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3409810 (or 3409808 counting only the distinct ones).

The product of its digits is 1317120, while the sum is 53.

The spelling of 11685877172 in words is "eleven billion, six hundred eighty-five million, eight hundred seventy-seven thousand, one hundred seventy-two".