44394767784577 has 12 divisors (see below), whose sum is σ = 51647452251780. Its totient is φ = 38049298753536.

The previous prime is 44394767784553. The next prime is 44394767784589. The reversal of 44394767784577 is 77548776749344.

It can be written as a sum of positive squares in 2 ways, for example, as 27651359503936 + 16743408280641 = 5258456^2 + 4091871^2 .

It is a de Polignac number, because none of the positive numbers 2^k-44394767784577 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 44394767784577.

It is not an unprimeable number, because it can be changed into a prime (44394767784077) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 39431448 + ... + 40541689.

It is an arithmetic number, because the mean of its divisors is an integer number (4303954354315).

Almost surely, 2^{44394767784577} is an apocalyptic number.

It is an amenable number.

44394767784577 is a deficient number, since it is larger than the sum of its proper divisors (7252684467203).

44394767784577 is a wasteful number, since it uses less digits than its factorization.

44394767784577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79984480 (or 79984473 counting only the distinct ones).

The product of its digits is 27880796160, while the sum is 82.

The spelling of 44394767784577 in words is "forty-four trillion, three hundred ninety-four billion, seven hundred sixty-seven million, seven hundred eighty-four thousand, five hundred seventy-seven".