44631813644 has 36 divisors (see below), whose sum is σ = 88621130304. Its totient is φ = 19632756000.

The previous prime is 44631813643. The next prime is 44631813673.

44631813644 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 44631813595 and 44631813604.

It is not an unprimeable number, because it can be changed into a prime (44631813643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1472327 + ... + 1502334.

It is an arithmetic number, because the mean of its divisors is an integer number (2461698064).

Almost surely, 2^44631813644 is an apocalyptic number.

44631813644 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

44631813644 is a deficient number, since it is larger than the sum of its proper divisors (43989316660).

44631813644 is a wasteful number, since it uses less digits than its factorization.

44631813644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2974718 (or 2974705 counting only the distinct ones).

The product of its digits is 663552, while the sum is 44.

The spelling of 44631813644 in words is "forty-four billion, six hundred thirty-one million, eight hundred thirteen thousand, six hundred forty-four".