15798512797 has 4 divisors (see below), whose sum is σ = 15798862656. Its totient is φ = 15798162940.

The previous prime is 15798512789. The next prime is 15798512813. The reversal of 15798512797 is 79721589751.

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.

It is a cyclic number.

It is not a de Polignac number, because 15798512797 - 2³ = 15798512789 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 (15798512767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95029 + ... + 201562.

It is an arithmetic number, because the mean of its divisors is an integer number (3949715664).

Almost surely, 2^15798512797 is an apocalyptic number.

It is an amenable number.

15798512797 is a deficient number, since it is larger than the sum of its proper divisors (349859).

15798512797 is an equidigital number, since it uses as much as digits as its factorization.

15798512797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349858.

The product of its digits is 11113200, while the sum is 61.

The spelling of 15798512797 in words is "fifteen billion, seven hundred ninety-eight million, five hundred twelve thousand, seven hundred ninety-seven".