13812720739 has 2 divisors, whose sum is σ = 13812720740. Its totient is φ = 13812720738.

The previous prime is 13812720703. The next prime is 13812720763. The reversal of 13812720739 is 93702721831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13812720739 - 2⁷ = 13812720611 is a prime.

It is a super-2 number, since 2×13812720739² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13812720695 and 13812720704.

It is not a weakly prime, because it can be changed into another prime (13812780739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6906360369 + 6906360370.

It is an arithmetic number, because the mean of its divisors is an integer number (6906360370).

Almost surely, 2^13812720739 is an apocalyptic number.

13812720739 is a deficient number, since it is larger than the sum of its proper divisors (1).

13812720739 is an equidigital number, since it uses as much as digits as its factorization.

13812720739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 43.

The spelling of 13812720739 in words is "thirteen billion, eight hundred twelve million, seven hundred twenty thousand, seven hundred thirty-nine".