12731739451 has 2 divisors, whose sum is σ = 12731739452. Its totient is φ = 12731739450.

The previous prime is 12731739439. The next prime is 12731739491. The reversal of 12731739451 is 15493713721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12731739451 - 2⁹ = 12731738939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12731739398 and 12731739407.

It is not a weakly prime, because it can be changed into another prime (12731739421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6365869725 + 6365869726.

It is an arithmetic number, because the mean of its divisors is an integer number (6365869726).

Almost surely, 2^12731739451 is an apocalyptic number.

12731739451 is a deficient number, since it is larger than the sum of its proper divisors (1).

12731739451 is an equidigital number, since it uses as much as digits as its factorization.

12731739451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 158760, while the sum is 43.

The spelling of 12731739451 in words is "twelve billion, seven hundred thirty-one million, seven hundred thirty-nine thousand, four hundred fifty-one".