15799191642849 has 8 divisors (see below), whose sum is σ = 21332241880960. Its totient is φ = 10399467916656.

The previous prime is 15799191642749. The next prime is 15799191642851. The reversal of 15799191642849 is 94824619199751.

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

It is not a de Polignac number, because 15799191642849 - 2²⁴ = 15799174865633 is a prime.

It is a super-2 number, since 2×15799191642849² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15799191642149) 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, 33331627702 + ... + 33331628175.

It is an arithmetic number, because the mean of its divisors is an integer number (2666530235120).

Almost surely, 2^{15799191642849} is an apocalyptic number.

It is an amenable number.

15799191642849 is a deficient number, since it is larger than the sum of its proper divisors (5533050238111).

15799191642849 is an equidigital number, since it uses as much as digits as its factorization.

15799191642849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66663255959.

The product of its digits is 352719360, while the sum is 75.

The spelling of 15799191642849 in words is "fifteen trillion, seven hundred ninety-nine billion, one hundred ninety-one million, six hundred forty-two thousand, eight hundred forty-nine".