145313681581291 has 2 divisors, whose sum is σ = 145313681581292. Its totient is φ = 145313681581290.

The previous prime is 145313681581247. The next prime is 145313681581303. The reversal of 145313681581291 is 192185186313541.

It is a happy number.

145313681581291 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 is a cyclic number.

It is not a de Polignac number, because 145313681581291 - 2⁴³ = 136517588559083 is a prime.

It is a super-2 number, since 2×145313681581291² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145313681581891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72656840790645 + 72656840790646.

It is an arithmetic number, because the mean of its divisors is an integer number (72656840790646).

Almost surely, 2^{145313681581291} is an apocalyptic number.

145313681581291 is a deficient number, since it is larger than the sum of its proper divisors (1).

145313681581291 is an equidigital number, since it uses as much as digits as its factorization.

145313681581291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6220800, while the sum is 58.

The spelling of 145313681581291 in words is "one hundred forty-five trillion, three hundred thirteen billion, six hundred eighty-one million, five hundred eighty-one thousand, two hundred ninety-one".