44737975816 has 24 divisors (see below), whose sum is σ = 84509221770. Its totient is φ = 22202235008.

The previous prime is 44737975753. The next prime is 44737975819. The reversal of 44737975816 is 61857973744.

It can be written as a sum of positive squares in 3 ways, for example, as 9898260100 + 34839715716 = 99490^2 + 186654^2 .

It is a super-2 number, since 2×44737975816² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (44737975819) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6999150 + ... + 7005538.

Almost surely, 2^44737975816 is an apocalyptic number.

It is an amenable number.

44737975816 is a deficient number, since it is larger than the sum of its proper divisors (39771245954).

44737975816 is an frugal number, since it uses more digits than its factorization.

44737975816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12921 (or 6528 counting only the distinct ones).

The product of its digits is 35562240, while the sum is 61.

The spelling of 44737975816 in words is "forty-four billion, seven hundred thirty-seven million, nine hundred seventy-five thousand, eight hundred sixteen".