15326140513 has 4 divisors (see below), whose sum is σ = 15326586820. Its totient is φ = 15325694208.

The previous prime is 15326140483. The next prime is 15326140631. The reversal of 15326140513 is 31504162351.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31504162351 = 5087 ⋅6193073.

It can be written as a sum of positive squares in 2 ways, for example, as 11528746384 + 3797394129 = 107372^2 + 61623^2 .

It is a cyclic number.

It is not a de Polignac number, because 15326140513 - 2¹³ = 15326132321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15326140913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166920 + ... + 241897.

It is an arithmetic number, because the mean of its divisors is an integer number (3831646705).

Almost surely, 2^15326140513 is an apocalyptic number.

It is an amenable number.

15326140513 is a deficient number, since it is larger than the sum of its proper divisors (446307).

15326140513 is an equidigital number, since it uses as much as digits as its factorization.

15326140513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446306.

The product of its (nonzero) digits is 10800, while the sum is 31.

The spelling of 15326140513 in words is "fifteen billion, three hundred twenty-six million, one hundred forty thousand, five hundred thirteen".