2513135918989 has 2 divisors, whose sum is σ = 2513135918990. Its totient is φ = 2513135918988.

The previous prime is 2513135918987. The next prime is 2513135919037. The reversal of 2513135918989 is 9898195313152.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1390140037764 + 1122995881225 = 1179042^2 + 1059715^2 .

It is a cyclic number.

It is not a de Polignac number, because 2513135918989 - 2¹ = 2513135918987 is a prime.

Together with 2513135918987, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2513135918989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2513135918987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1256567959494 + 1256567959495.

It is an arithmetic number, because the mean of its divisors is an integer number (1256567959495).

Almost surely, 2^{2513135918989} is an apocalyptic number.

It is an amenable number.

2513135918989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2513135918989 is an equidigital number, since it uses as much as digits as its factorization.

2513135918989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20995200, while the sum is 64.

The spelling of 2513135918989 in words is "two trillion, five hundred thirteen billion, one hundred thirty-five million, nine hundred eighteen thousand, nine hundred eighty-nine".