11661105516006 has 32 divisors (see below), whose sum is σ = 23451666271488. Its totient is φ = 3865460404320.

The previous prime is 11661105515959. The next prime is 11661105516037. The reversal of 11661105516006 is 60061550116611.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50717701 + ... + 50947103.

It is an arithmetic number, because the mean of its divisors is an integer number (732864570984).

Almost surely, 2^{11661105516006} is an apocalyptic number.

11661105516006 is an abundant number, since it is smaller than the sum of its proper divisors (11790560755482).

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

11661105516006 is a wasteful number, since it uses less digits than its factorization.

11661105516006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276396.

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

The spelling of 11661105516006 in words is "eleven trillion, six hundred sixty-one billion, one hundred five million, five hundred sixteen thousand, six".