44565998820 has 144 divisors (see below), whose sum is σ = 150163554240. Its totient is φ = 9835236096.

The previous prime is 44565998809. The next prime is 44565998843. The reversal of 44565998820 is 2889956544.

It is a super-2 number, since 2×44565998820² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 176094 + ... + 346613.

It is an arithmetic number, because the mean of its divisors is an integer number (1042802460).

Almost surely, 2^44565998820 is an apocalyptic number.

It is an amenable number.

44565998820 is an abundant number, since it is smaller than the sum of its proper divisors (105597555420).

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

44565998820 is a wasteful number, since it uses less digits than its factorization.

44565998820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522762 (or 522753 counting only the distinct ones).

The product of its (nonzero) digits is 24883200, while the sum is 60.

The spelling of 44565998820 in words is "forty-four billion, five hundred sixty-five million, nine hundred ninety-eight thousand, eight hundred twenty".