11651615166 has 16 divisors (see below), whose sum is σ = 23933047824. Its totient is φ = 3778902144.

The previous prime is 11651615153. The next prime is 11651615189. The reversal of 11651615166 is 66151615611.

It is a super-2 number, since 2×11651615166² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 26242155 + ... + 26242598.

It is an arithmetic number, because the mean of its divisors is an integer number (1495815489).

Almost surely, 2^11651615166 is an apocalyptic number.

11651615166 is an abundant number, since it is smaller than the sum of its proper divisors (12281432658).

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

11651615166 is a wasteful number, since it uses less digits than its factorization.

11651615166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52484795.

The product of its digits is 32400, while the sum is 39.

The spelling of 11651615166 in words is "eleven billion, six hundred fifty-one million, six hundred fifteen thousand, one hundred sixty-six".