13620620137 has 2 divisors, whose sum is σ = 13620620138. Its totient is φ = 13620620136.

The previous prime is 13620620113. The next prime is 13620620141. The reversal of 13620620137 is 73102602631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9371014416 + 4249605721 = 96804^2 + 65189^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13620620137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13620620099 and 13620620108.

It is not a weakly prime, because it can be changed into another prime (13620620107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6810310068 + 6810310069.

It is an arithmetic number, because the mean of its divisors is an integer number (6810310069).

Almost surely, 2^13620620137 is an apocalyptic number.

It is an amenable number.

13620620137 is a deficient number, since it is larger than the sum of its proper divisors (1).

13620620137 is an equidigital number, since it uses as much as digits as its factorization.

13620620137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 31.

The spelling of 13620620137 in words is "thirteen billion, six hundred twenty million, six hundred twenty thousand, one hundred thirty-seven".