44190510440581 has 2 divisors, whose sum is σ = 44190510440582. Its totient is φ = 44190510440580.

The previous prime is 44190510440513. The next prime is 44190510440683. The reversal of 44190510440581 is 18504401509144.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44022680931681 + 167829508900 = 6634959^2 + 409670^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44190510440581 is a prime.

It is a super-2 number, since 2×44190510440581² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44190510440381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22095255220290 + 22095255220291.

It is an arithmetic number, because the mean of its divisors is an integer number (22095255220291).

Almost surely, 2^{44190510440581} is an apocalyptic number.

It is an amenable number.

44190510440581 is a deficient number, since it is larger than the sum of its proper divisors (1).

44190510440581 is an equidigital number, since it uses as much as digits as its factorization.

44190510440581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 460800, while the sum is 46.

The spelling of 44190510440581 in words is "forty-four trillion, one hundred ninety billion, five hundred ten million, four hundred forty thousand, five hundred eighty-one".