15641334613 has 8 divisors (see below), whose sum is σ = 15938720568. Its totient is φ = 15344032704.

The previous prime is 15641334589. The next prime is 15641334617. The reversal of 15641334613 is 31643314651.

It can be written as a sum of positive squares in 4 ways, for example, as 580644 + 15640753969 = 762^2 + 125063^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15641334613 - 2²⁹ = 15104463701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15641334617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 456931 + ... + 489967.

It is an arithmetic number, because the mean of its divisors is an integer number (1992340071).

Almost surely, 2^15641334613 is an apocalyptic number.

It is an amenable number.

15641334613 is a deficient number, since it is larger than the sum of its proper divisors (297385955).

15641334613 is an equidigital number, since it uses as much as digits as its factorization.

15641334613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42023.

The product of its digits is 77760, while the sum is 37.

The spelling of 15641334613 in words is "fifteen billion, six hundred forty-one million, three hundred thirty-four thousand, six hundred thirteen".