44784987977 has 2 divisors, whose sum is σ = 44784987978. Its totient is φ = 44784987976.

The previous prime is 44784987967. The next prime is 44784988033. The reversal of 44784987977 is 77978948744.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34217970361 + 10567017616 = 184981^2 + 102796^2 .

It is a cyclic number.

It is not a de Polignac number, because 44784987977 - 2⁸ = 44784987721 is a prime.

It is not a weakly prime, because it can be changed into another prime (44784987967) 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 as a sum of consecutive naturals, namely, 22392493988 + 22392493989.

It is an arithmetic number, because the mean of its divisors is an integer number (22392493989).

Almost surely, 2^44784987977 is an apocalyptic number.

It is an amenable number.

44784987977 is a deficient number, since it is larger than the sum of its proper divisors (1).

44784987977 is an equidigital number, since it uses as much as digits as its factorization.

44784987977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 796594176, while the sum is 74.

The spelling of 44784987977 in words is "forty-four billion, seven hundred eighty-four million, nine hundred eighty-seven thousand, nine hundred seventy-seven".