13351981439 has 2 divisors, whose sum is σ = 13351981440. Its totient is φ = 13351981438.

The previous prime is 13351981399. The next prime is 13351981457. The reversal of 13351981439 is 93418915331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13351981439 - 2³² = 9057014143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13351981393 and 13351981402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13351981469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6675990719 + 6675990720.

It is an arithmetic number, because the mean of its divisors is an integer number (6675990720).

Almost surely, 2^13351981439 is an apocalyptic number.

13351981439 is a deficient number, since it is larger than the sum of its proper divisors (1).

13351981439 is an equidigital number, since it uses as much as digits as its factorization.

13351981439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 47.

The spelling of 13351981439 in words is "thirteen billion, three hundred fifty-one million, nine hundred eighty-one thousand, four hundred thirty-nine".