44555406644 has 12 divisors (see below), whose sum is σ = 89110813344. Its totient is φ = 19095174264.

The previous prime is 44555406601. The next prime is 44555406647. The reversal of 44555406644 is 44660455544.

44555406644 is an admirable number.

It is a super-2 number, since 2×44555406644² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44555406647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 795632234 + ... + 795632289.

It is an arithmetic number, because the mean of its divisors is an integer number (7425901112).

Almost surely, 2^44555406644 is an apocalyptic number.

It is an amenable number.

44555406644 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

44555406644 is a wasteful number, since it uses less digits than its factorization.

44555406644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591264534 (or 1591264532 counting only the distinct ones).

The product of its (nonzero) digits is 4608000, while the sum is 47.

The spelling of 44555406644 in words is "forty-four billion, five hundred fifty-five million, four hundred six thousand, six hundred forty-four".