15798892609 has 4 divisors (see below), whose sum is σ = 15799592880. Its totient is φ = 15798192340.

The previous prime is 15798892561. The next prime is 15798892661. The reversal of 15798892609 is 90629889751.

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: 90629889751 = 2551 ⋅35527201.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15798892609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15798892679) 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, 315127 + ... + 361804.

It is an arithmetic number, because the mean of its divisors is an integer number (3949898220).

Almost surely, 2^15798892609 is an apocalyptic number.

It is an amenable number.

15798892609 is a deficient number, since it is larger than the sum of its proper divisors (700271).

15798892609 is an equidigital number, since it uses as much as digits as its factorization.

15798892609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700270.

The product of its (nonzero) digits is 19595520, while the sum is 64.

The spelling of 15798892609 in words is "fifteen billion, seven hundred ninety-eight million, eight hundred ninety-two thousand, six hundred nine".