541624136423581 has 2 divisors, whose sum is σ = 541624136423582. Its totient is φ = 541624136423580.

The previous prime is 541624136423543. The next prime is 541624136423659. The reversal of 541624136423581 is 185324631426145.

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., 519210454716100 + 22413681707481 = 22786190^2 + 4734309^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-541624136423581 is a prime.

It is a super-2 number, since 2×541624136423581² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (541624136423081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270812068211790 + 270812068211791.

It is an arithmetic number, because the mean of its divisors is an integer number (270812068211791).

Almost surely, 2^{541624136423581} is an apocalyptic number.

It is an amenable number.

541624136423581 is a deficient number, since it is larger than the sum of its proper divisors (1).

541624136423581 is an equidigital number, since it uses as much as digits as its factorization.

541624136423581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16588800, while the sum is 55.

The spelling of 541624136423581 in words is "five hundred forty-one trillion, six hundred twenty-four billion, one hundred thirty-six million, four hundred twenty-three thousand, five hundred eighty-one".