13455681739 has 2 divisors, whose sum is σ = 13455681740. Its totient is φ = 13455681738.

The previous prime is 13455681691. The next prime is 13455681773. The reversal of 13455681739 is 93718655431.

It is a strong prime.

It is an emirp because it is prime and its reverse (93718655431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13455681739 - 2¹¹ = 13455679691 is a prime.

It is a super-2 number, since 2×13455681739² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13455681779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6727840869 + 6727840870.

It is an arithmetic number, because the mean of its divisors is an integer number (6727840870).

Almost surely, 2^13455681739 is an apocalyptic number.

13455681739 is a deficient number, since it is larger than the sum of its proper divisors (1).

13455681739 is an equidigital number, since it uses as much as digits as its factorization.

13455681739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2721600, while the sum is 52.

The spelling of 13455681739 in words is "thirteen billion, four hundred fifty-five million, six hundred eighty-one thousand, seven hundred thirty-nine".