44666626644 has 72 divisors (see below), whose sum is σ = 117160243200. Its totient is φ = 14333083200.

The previous prime is 44666626621. The next prime is 44666626651. The reversal of 44666626644 is 44662666644.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108382 + ... + 317930.

It is an arithmetic number, because the mean of its divisors is an integer number (1627225600).

Almost surely, 2^44666626644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44666626644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58580121600).

44666626644 is an abundant number, since it is smaller than the sum of its proper divisors (72493616556).

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

44666626644 is a wasteful number, since it uses less digits than its factorization.

44666626644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209781 (or 209776 counting only the distinct ones).

The product of its digits is 23887872, while the sum is 54.

The spelling of 44666626644 in words is "forty-four billion, six hundred sixty-six million, six hundred twenty-six thousand, six hundred forty-four".