11689523554 has 16 divisors (see below), whose sum is σ = 17647580160. Its totient is φ = 5807071840.

The previous prime is 11689523537. The next prime is 11689523563. The reversal of 11689523554 is 45532598611.

It is a junction number, because it is equal to n+sod(n) for n = 11689523498 and 11689523507.

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, 302262 + ... + 338734.

It is an arithmetic number, because the mean of its divisors is an integer number (1102973760).

Almost surely, 2^11689523554 is an apocalyptic number.

11689523554 is a deficient number, since it is larger than the sum of its proper divisors (5958056606).

11689523554 is a wasteful number, since it uses less digits than its factorization.

11689523554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37505.

The product of its digits is 1296000, while the sum is 49.

The spelling of 11689523554 in words is "eleven billion, six hundred eighty-nine million, five hundred twenty-three thousand, five hundred fifty-four".