44789759981 has 2 divisors, whose sum is σ = 44789759982. Its totient is φ = 44789759980.

The previous prime is 44789759947. The next prime is 44789760019. The reversal of 44789759981 is 18995798744.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41929114756 + 2860645225 = 204766^2 + 53485^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44789759981 is a prime.

It is a super-2 number, since 2×44789759981² (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 (44789759921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22394879990 + 22394879991.

It is an arithmetic number, because the mean of its divisors is an integer number (22394879991).

Almost surely, 2^44789759981 is an apocalyptic number.

It is an amenable number.

44789759981 is a deficient number, since it is larger than the sum of its proper divisors (1).

44789759981 is an equidigital number, since it uses as much as digits as its factorization.

44789759981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 182891520, while the sum is 71.

The spelling of 44789759981 in words is "forty-four billion, seven hundred eighty-nine million, seven hundred fifty-nine thousand, nine hundred eighty-one".