11665271960 has 16 divisors (see below), whose sum is σ = 26246862000. Its totient is φ = 4666108768.

The previous prime is 11665271911. The next prime is 11665271983. The reversal of 11665271960 is 6917256611.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145815860 + ... + 145815939.

It is an arithmetic number, because the mean of its divisors is an integer number (1640428875).

Almost surely, 2^11665271960 is an apocalyptic number.

11665271960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11665271960 is an abundant number, since it is smaller than the sum of its proper divisors (14581590040).

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

11665271960 is a wasteful number, since it uses less digits than its factorization.

11665271960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291631810 (or 291631806 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 44.

The spelling of 11665271960 in words is "eleven billion, six hundred sixty-five million, two hundred seventy-one thousand, nine hundred sixty".