11521662044655 has 96 divisors (see below), whose sum is σ = 22185770097600. Its totient is φ = 5084985765888.

The previous prime is 11521662044653. The next prime is 11521662044677. The reversal of 11521662044655 is 55644026612511.

It is a happy number.

It is not a de Polignac number, because 11521662044655 - 2¹ = 11521662044653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11521662044653) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 490084041 + ... + 490107549.

It is an arithmetic number, because the mean of its divisors is an integer number (231101771850).

Almost surely, 2^{11521662044655} is an apocalyptic number.

11521662044655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11521662044655 is a deficient number, since it is larger than the sum of its proper divisors (10664108052945).

11521662044655 is a wasteful number, since it uses less digits than its factorization.

11521662044655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46553 (or 46546 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 48.

The spelling of 11521662044655 in words is "eleven trillion, five hundred twenty-one billion, six hundred sixty-two million, forty-four thousand, six hundred fifty-five".