15635342641 has 4 divisors (see below), whose sum is σ = 15868706032. Its totient is φ = 15401979252.

The previous prime is 15635342633. The next prime is 15635342659. The reversal of 15635342641 is 14624353651.

15635342641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14624353651 = 463 ⋅31586077.

It is a cyclic number.

It is not a de Polignac number, because 15635342641 - 2³ = 15635342633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15635342594 and 15635342603.

It is not an unprimeable number, because it can be changed into a prime (15635342341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116681595 + ... + 116681728.

It is an arithmetic number, because the mean of its divisors is an integer number (3967176508).

Almost surely, 2^15635342641 is an apocalyptic number.

It is an amenable number.

15635342641 is a deficient number, since it is larger than the sum of its proper divisors (233363391).

15635342641 is an equidigital number, since it uses as much as digits as its factorization.

15635342641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233363390.

The product of its digits is 259200, while the sum is 40.

The spelling of 15635342641 in words is "fifteen billion, six hundred thirty-five million, three hundred forty-two thousand, six hundred forty-one".