14992745913581 has 2 divisors, whose sum is σ = 14992745913582. Its totient is φ = 14992745913580.

The previous prime is 14992745913577. The next prime is 14992745913611. The reversal of 14992745913581 is 18531954729941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7663435060681 + 7329310852900 = 2768291^2 + 2707270^2 .

It is a cyclic number.

It is not a de Polignac number, because 14992745913581 - 2² = 14992745913577 is a prime.

It is a super-2 number, since 2×14992745913581² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14992745913521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7496372956790 + 7496372956791.

It is an arithmetic number, because the mean of its divisors is an integer number (7496372956791).

Almost surely, 2^{14992745913581} is an apocalyptic number.

It is an amenable number.

14992745913581 is a deficient number, since it is larger than the sum of its proper divisors (1).

14992745913581 is an equidigital number, since it uses as much as digits as its factorization.

14992745913581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97977600, while the sum is 68.

The spelling of 14992745913581 in words is "fourteen trillion, nine hundred ninety-two billion, seven hundred forty-five million, nine hundred thirteen thousand, five hundred eighty-one".