44400763221 has 16 divisors (see below), whose sum is σ = 59460065280. Its totient is φ = 29471078000.

The previous prime is 44400763207. The next prime is 44400763237. The reversal of 44400763221 is 12236700444.

It is a cyclic number.

It is not a de Polignac number, because 44400763221 - 2¹⁵ = 44400730453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44400761221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2203036 + ... + 2223098.

It is an arithmetic number, because the mean of its divisors is an integer number (3716254080).

Almost surely, 2^44400763221 is an apocalyptic number.

It is an amenable number.

44400763221 is a deficient number, since it is larger than the sum of its proper divisors (15059302059).

44400763221 is a wasteful number, since it uses less digits than its factorization.

44400763221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23256.

The product of its (nonzero) digits is 32256, while the sum is 33.

The spelling of 44400763221 in words is "forty-four billion, four hundred million, seven hundred sixty-three thousand, two hundred twenty-one".