126515364612313 has 4 divisors (see below), whose sum is σ = 126515468114740. Its totient is φ = 126515261109888.

The previous prime is 126515364612281. The next prime is 126515364612317. The reversal of 126515364612313 is 313216463515621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17147524875849 + 109367839736464 = 4140957^2 + 10457908^2 .

It is a cyclic number.

It is not a de Polignac number, because 126515364612313 - 2⁵ = 126515364612281 is a prime.

It is a super-2 number, since 2×126515364612313² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126515364612317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49895520 + ... + 52369777.

It is an arithmetic number, because the mean of its divisors is an integer number (31628867028685).

Almost surely, 2^{126515364612313} is an apocalyptic number.

It is an amenable number.

126515364612313 is a deficient number, since it is larger than the sum of its proper divisors (103502427).

126515364612313 is a wasteful number, since it uses less digits than its factorization.

126515364612313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103502426.

The product of its digits is 2332800, while the sum is 49.

The spelling of 126515364612313 in words is "one hundred twenty-six trillion, five hundred fifteen billion, three hundred sixty-four million, six hundred twelve thousand, three hundred thirteen".