44621001984 has 144 divisors (see below), whose sum is σ = 128013790464. Its totient is φ = 13716480000.

The previous prime is 44621001983. The next prime is 44621002001. The reversal of 44621001984 is 48910012644.

It is a super-2 number, since 2×44621001984² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44621001983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18978409 + ... + 18980759.

It is an arithmetic number, because the mean of its divisors is an integer number (888984656).

Almost surely, 2^44621001984 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 44621001984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64006895232).

44621001984 is an abundant number, since it is smaller than the sum of its proper divisors (83392788480).

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

44621001984 is a wasteful number, since it uses less digits than its factorization.

44621001984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4284 (or 4270 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The spelling of 44621001984 in words is "forty-four billion, six hundred twenty-one million, one thousand, nine hundred eighty-four".