44813421540 has 72 divisors (see below), whose sum is σ = 143930175480. Its totient is φ = 11247289344.

The previous prime is 44813421539. The next prime is 44813421577. The reversal of 44813421540 is 4512431844.

44813421540 is a `hidden beast` number, since 4 + 4 + 81 + 34 + 2 + 1 + 540 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2222368164 + 42591053376 = 47142^2 + 206376^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 44813421495 and 44813421504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7319395 + ... + 7325514.

It is an arithmetic number, because the mean of its divisors is an integer number (1999030215).

Almost surely, 2^44813421540 is an apocalyptic number.

It is an amenable number.

44813421540 is an abundant number, since it is smaller than the sum of its proper divisors (99116753940).

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

44813421540 is a wasteful number, since it uses less digits than its factorization.

44813421540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14644941 (or 14644936 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

The spelling of 44813421540 in words is "forty-four billion, eight hundred thirteen million, four hundred twenty-one thousand, five hundred forty".