44865784421 has 2 divisors, whose sum is σ = 44865784422. Its totient is φ = 44865784420.

The previous prime is 44865784367. The next prime is 44865784441. The reversal of 44865784421 is 12448756844.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39432030625 + 5433753796 = 198575^2 + 73714^2 .

It is a cyclic number.

It is not a de Polignac number, because 44865784421 - 2³⁴ = 27685915237 is a prime.

It is a super-2 number, since 2×44865784421² (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 (44865784441) 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, 22432892210 + 22432892211.

It is an arithmetic number, because the mean of its divisors is an integer number (22432892211).

Almost surely, 2^44865784421 is an apocalyptic number.

It is an amenable number.

44865784421 is a deficient number, since it is larger than the sum of its proper divisors (1).

44865784421 is an equidigital number, since it uses as much as digits as its factorization.

44865784421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6881280, while the sum is 53.

The spelling of 44865784421 in words is "forty-four billion, eight hundred sixty-five million, seven hundred eighty-four thousand, four hundred twenty-one".