11661650665086 has 16 divisors (see below), whose sum is σ = 23604304961664. Its totient is φ = 3840382949784.

The previous prime is 11661650665069. The next prime is 11661650665109. The reversal of 11661650665086 is 68056605616611.

It is a super-2 number, since 2×11661650665086² (a number of 27 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, 11708484106 + ... + 11708485101.

It is an arithmetic number, because the mean of its divisors is an integer number (1475269060104).

Almost surely, 2^{11661650665086} is an apocalyptic number.

11661650665086 is an abundant number, since it is smaller than the sum of its proper divisors (11942654296578).

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

11661650665086 is a wasteful number, since it uses less digits than its factorization.

11661650665086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23416969295.

The product of its (nonzero) digits is 9331200, while the sum is 57.

The spelling of 11661650665086 in words is "eleven trillion, six hundred sixty-one billion, six hundred fifty million, six hundred sixty-five thousand, eighty-six".