11721296256480 has 144 divisors (see below), whose sum is σ = 40154562577584. Its totient is φ = 3113516728320.

The previous prime is 11721296256451. The next prime is 11721296256503. The reversal of 11721296256480 is 8465269212711.

11721296256480 is a `hidden beast` number, since 1 + 1 + 7 + 2 + 1 + 2 + 9 + 625 + 6 + 4 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15466086 + ... + 16206245.

It is an arithmetic number, because the mean of its divisors is an integer number (278851129011).

Almost surely, 2^{11721296256480} is an apocalyptic number.

11721296256480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11721296256480 is an abundant number, since it is smaller than the sum of its proper divisors (28433266321104).

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

11721296256480 is a wasteful number, since it uses less digits than its factorization.

11721296256480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31672609 (or 31672598 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 11721296256480 in words is "eleven trillion, seven hundred twenty-one billion, two hundred ninety-six million, two hundred fifty-six thousand, four hundred eighty".