4044957372521 has 12 divisors (see below), whose sum is σ = 4380103591632. Its totient is φ = 3733754811696.

The previous prime is 4044957372461. The next prime is 4044957372553. The reversal of 4044957372521 is 1252737594404.

It is not a de Polignac number, because 4044957372521 - 2²⁶ = 4044890263657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4044957372571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17581190 + ... + 17809776.

It is an arithmetic number, because the mean of its divisors is an integer number (365008632636).

Almost surely, 2^{4044957372521} is an apocalyptic number.

It is an amenable number.

4044957372521 is a deficient number, since it is larger than the sum of its proper divisors (335146219111).

4044957372521 is a wasteful number, since it uses less digits than its factorization.

4044957372521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333320 (or 333307 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 53.

The spelling of 4044957372521 in words is "four trillion, forty-four billion, nine hundred fifty-seven million, three hundred seventy-two thousand, five hundred twenty-one".