12515150026513 has 4 divisors (see below), whose sum is σ = 12515460701220. Its totient is φ = 12514839351808.

The previous prime is 12515150026507. The next prime is 12515150026537. The reversal of 12515150026513 is 31562005151521.

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 8882378830224 + 3632771196289 = 2980332^2 + 1905983^2 .

It is a cyclic number.

It is not a de Polignac number, because 12515150026513 - 2¹³ = 12515150018321 is a prime.

It is a super-2 number, since 2×12515150026513² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12515150026913) 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, 155276920 + ... + 155357497.

It is an arithmetic number, because the mean of its divisors is an integer number (3128865175305).

Almost surely, 2^{12515150026513} is an apocalyptic number.

It is an amenable number.

12515150026513 is a deficient number, since it is larger than the sum of its proper divisors (310674707).

12515150026513 is an equidigital number, since it uses as much as digits as its factorization.

12515150026513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310674706.

The product of its (nonzero) digits is 45000, while the sum is 37.

The spelling of 12515150026513 in words is "twelve trillion, five hundred fifteen billion, one hundred fifty million, twenty-six thousand, five hundred thirteen".