14991731441 has 2 divisors, whose sum is σ = 14991731442. Its totient is φ = 14991731440.

The previous prime is 14991731393. The next prime is 14991731459. The reversal of 14991731441 is 14413719941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14279055025 + 712676416 = 119495^2 + 26696^2 .

It is a cyclic number.

It is not a de Polignac number, because 14991731441 - 2²² = 14987537137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 14991731392 and 14991731401.

It is not a weakly prime, because it can be changed into another prime (14991731341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7495865720 + 7495865721.

It is an arithmetic number, because the mean of its divisors is an integer number (7495865721).

Almost surely, 2^14991731441 is an apocalyptic number.

It is an amenable number.

14991731441 is a deficient number, since it is larger than the sum of its proper divisors (1).

14991731441 is an equidigital number, since it uses as much as digits as its factorization.

14991731441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 44.

The spelling of 14991731441 in words is "fourteen billion, nine hundred ninety-one million, seven hundred thirty-one thousand, four hundred forty-one".