44453235621 has 32 divisors (see below), whose sum is σ = 63081203328. Its totient is φ = 27748730880.

The previous prime is 44453235557. The next prime is 44453235641. The reversal of 44453235621 is 12653235444.

It is not a de Polignac number, because 44453235621 - 2⁶ = 44453235557 is a prime.

It is a super-2 number, since 2×44453235621² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 44453235621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44453235641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9112435 + ... + 9117311.

It is an arithmetic number, because the mean of its divisors is an integer number (1971287604).

Almost surely, 2^44453235621 is an apocalyptic number.

It is an amenable number.

44453235621 is a deficient number, since it is larger than the sum of its proper divisors (18627967707).

44453235621 is a wasteful number, since it uses less digits than its factorization.

44453235621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5781.

The product of its digits is 345600, while the sum is 39.

The spelling of 44453235621 in words is "forty-four billion, four hundred fifty-three million, two hundred thirty-five thousand, six hundred twenty-one".