11045664203521 has 8 divisors (see below), whose sum is σ = 11258305551360. Its totient is φ = 10833179618352.

The previous prime is 11045664203473. The next prime is 11045664203603. The reversal of 11045664203521 is 12530246654011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11045664203521 - 2²⁹ = 11045127332609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11045664201521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39048385 + ... + 39330238.

It is an arithmetic number, because the mean of its divisors is an integer number (1407288193920).

Almost surely, 2^{11045664203521} is an apocalyptic number.

It is an amenable number.

11045664203521 is a deficient number, since it is larger than the sum of its proper divisors (212641347839).

11045664203521 is an equidigital number, since it uses as much as digits as its factorization.

11045664203521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78381335.

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 11045664203521 in words is "eleven trillion, forty-five billion, six hundred sixty-four million, two hundred three thousand, five hundred twenty-one".