15005132581 has 2 divisors, whose sum is σ = 15005132582. Its totient is φ = 15005132580.

The previous prime is 15005132539. The next prime is 15005132621. The reversal of 15005132581 is 18523150051.

15005132581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13704448356 + 1300684225 = 117066^2 + 36065^2 .

It is a cyclic number.

It is not a de Polignac number, because 15005132581 - 2⁹ = 15005132069 is a prime.

It is a super-2 number, since 2×15005132581² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15005132521) 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, 7502566290 + 7502566291.

It is an arithmetic number, because the mean of its divisors is an integer number (7502566291).

Almost surely, 2^15005132581 is an apocalyptic number.

It is an amenable number.

15005132581 is a deficient number, since it is larger than the sum of its proper divisors (1).

15005132581 is an equidigital number, since it uses as much as digits as its factorization.

15005132581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6000, while the sum is 31.

The spelling of 15005132581 in words is "fifteen billion, five million, one hundred thirty-two thousand, five hundred eighty-one".