15213011587013 has 2 divisors, whose sum is σ = 15213011587014. Its totient is φ = 15213011587012.

The previous prime is 15213011586961. The next prime is 15213011587117. The reversal of 15213011587013 is 31078511031251.

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., 15098998662049 + 114012924964 = 3885743^2 + 337658^2 .

It is a cyclic number.

It is not a de Polignac number, because 15213011587013 - 2¹⁴ = 15213011570629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15213011517013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7606505793506 + 7606505793507.

It is an arithmetic number, because the mean of its divisors is an integer number (7606505793507).

Almost surely, 2^{15213011587013} is an apocalyptic number.

It is an amenable number.

15213011587013 is a deficient number, since it is larger than the sum of its proper divisors (1).

15213011587013 is an equidigital number, since it uses as much as digits as its factorization.

15213011587013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 38.

The spelling of 15213011587013 in words is "fifteen trillion, two hundred thirteen billion, eleven million, five hundred eighty-seven thousand, thirteen".