11665502044 has 24 divisors (see below), whose sum is σ = 23397117408. Its totient is φ = 4985333760.

The previous prime is 11665502033. The next prime is 11665502063. The reversal of 11665502044 is 44020556611.

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, 580237 + ... + 600004.

It is an arithmetic number, because the mean of its divisors is an integer number (974879892).

Almost surely, 2^11665502044 is an apocalyptic number.

11665502044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11665502044 is an abundant number, since it is smaller than the sum of its proper divisors (11731615364).

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

11665502044 is a wasteful number, since it uses less digits than its factorization.

11665502044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180605 (or 1180603 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The spelling of 11665502044 in words is "eleven billion, six hundred sixty-five million, five hundred two thousand, forty-four".