44640452021 has 8 divisors (see below), whose sum is σ = 49831202784. Its totient is φ = 39638455920.

The previous prime is 44640451967. The next prime is 44640452039. The reversal of 44640452021 is 12025404644.

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 44640452021 - 2⁶ = 44640451957 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44640452821) 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, 47188166 + ... + 47189111.

It is an arithmetic number, because the mean of its divisors is an integer number (6228900348).

Almost surely, 2^44640452021 is an apocalyptic number.

It is an amenable number.

44640452021 is a deficient number, since it is larger than the sum of its proper divisors (5190750763).

44640452021 is a wasteful number, since it uses less digits than its factorization.

44640452021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94377331.

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 44640452021 its reverse (12025404644), we get a palindrome (56665856665).

The spelling of 44640452021 in words is "forty-four billion, six hundred forty million, four hundred fifty-two thousand, twenty-one".