44808321921 has 16 divisors (see below), whose sum is σ = 67423181760. Its totient is φ = 26220125120.

The previous prime is 44808321869. The next prime is 44808321937. The reversal of 44808321921 is 12912380844.

44808321921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 44808321921 - 2⁹ = 44808321409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (44808323921) 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, 23409870 + ... + 23411783.

It is an arithmetic number, because the mean of its divisors is an integer number (4213948860).

Almost surely, 2^44808321921 is an apocalyptic number.

It is an amenable number.

44808321921 is a deficient number, since it is larger than the sum of its proper divisors (22614859839).

44808321921 is a wasteful number, since it uses less digits than its factorization.

44808321921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46821696.

The product of its (nonzero) digits is 110592, while the sum is 42.

The spelling of 44808321921 in words is "forty-four billion, eight hundred eight million, three hundred twenty-one thousand, nine hundred twenty-one".