11665055856280 has 16 divisors (see below), whose sum is σ = 26246375676720. Its totient is φ = 4666022342496.

The previous prime is 11665055856269. The next prime is 11665055856299. The reversal of 11665055856280 is 8265855056611.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145813198164 + ... + 145813198243.

It is an arithmetic number, because the mean of its divisors is an integer number (1640398479795).

Almost surely, 2^{11665055856280} is an apocalyptic number.

11665055856280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11665055856280 is an abundant number, since it is smaller than the sum of its proper divisors (14581319820440).

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

11665055856280 is a wasteful number, since it uses less digits than its factorization.

11665055856280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291626396418 (or 291626396414 counting only the distinct ones).

The product of its (nonzero) digits is 17280000, while the sum is 58.

The spelling of 11665055856280 in words is "eleven trillion, six hundred sixty-five billion, fifty-five million, eight hundred fifty-six thousand, two hundred eighty".