44451783997 has 2 divisors, whose sum is σ = 44451783998. Its totient is φ = 44451783996.

The previous prime is 44451783989. The next prime is 44451784007. The reversal of 44451783997 is 79938715444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39672274041 + 4779509956 = 199179^2 + 69134^2 .

It is a cyclic number.

It is not a de Polignac number, because 44451783997 - 2³ = 44451783989 is a prime.

It is a super-2 number, since 2×44451783997² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44451783977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22225891998 + 22225891999.

It is an arithmetic number, because the mean of its divisors is an integer number (22225891999).

Almost surely, 2^44451783997 is an apocalyptic number.

It is an amenable number.

44451783997 is a deficient number, since it is larger than the sum of its proper divisors (1).

44451783997 is an equidigital number, since it uses as much as digits as its factorization.

44451783997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30481920, while the sum is 61.

The spelling of 44451783997 in words is "forty-four billion, four hundred fifty-one million, seven hundred eighty-three thousand, nine hundred ninety-seven".