44364540644 has 24 divisors (see below), whose sum is σ = 78600500160. Its totient is φ = 21908948256.

The previous prime is 44364540631. The next prime is 44364540677. The reversal of 44364540644 is 44604546344.

It is a junction number, because it is equal to n+sod(n) for n = 44364540595 and 44364540604.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106634 + ... + 316385.

It is an arithmetic number, because the mean of its divisors is an integer number (3275020840).

Almost surely, 2^44364540644 is an apocalyptic number.

It is an amenable number.

44364540644 is a deficient number, since it is larger than the sum of its proper divisors (34235959516).

44364540644 is a wasteful number, since it uses less digits than its factorization.

44364540644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423347 (or 423345 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 44.

The spelling of 44364540644 in words is "forty-four billion, three hundred sixty-four million, five hundred forty thousand, six hundred forty-four".