13555612313 has 2 divisors, whose sum is σ = 13555612314. Its totient is φ = 13555612312.

The previous prime is 13555612309. The next prime is 13555612379. The reversal of 13555612313 is 31321655531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12229705744 + 1325906569 = 110588^2 + 36413^2 .

It is a cyclic number.

It is not a de Polignac number, because 13555612313 - 2² = 13555612309 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (13555612913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6777806156 + 6777806157.

It is an arithmetic number, because the mean of its divisors is an integer number (6777806157).

Almost surely, 2^13555612313 is an apocalyptic number.

It is an amenable number.

13555612313 is a deficient number, since it is larger than the sum of its proper divisors (1).

13555612313 is an equidigital number, since it uses as much as digits as its factorization.

13555612313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40500, while the sum is 35.

The spelling of 13555612313 in words is "thirteen billion, five hundred fifty-five million, six hundred twelve thousand, three hundred thirteen".