44640704777 has 4 divisors (see below), whose sum is σ = 44681399316. Its totient is φ = 44600010240.

The previous prime is 44640704741. The next prime is 44640704819. The reversal of 44640704777 is 77740704644.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4015883641 + 40624821136 = 63371^2 + 201556^2 .

It is a cyclic number.

It is not a de Polignac number, because 44640704777 - 2¹² = 44640700681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44640704707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20345624 + ... + 20347817.

It is an arithmetic number, because the mean of its divisors is an integer number (11170349829).

Almost surely, 2^44640704777 is an apocalyptic number.

It is an amenable number.

44640704777 is a deficient number, since it is larger than the sum of its proper divisors (40694539).

44640704777 is a wasteful number, since it uses less digits than its factorization.

44640704777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40694538.

The product of its (nonzero) digits is 3687936, while the sum is 50.

The spelling of 44640704777 in words is "forty-four billion, six hundred forty million, seven hundred four thousand, seven hundred seventy-seven".