15749966897 has 16 divisors (see below), whose sum is σ = 19573891200. Its totient is φ = 12362450688.

The previous prime is 15749966891. The next prime is 15749966899. The reversal of 15749966897 is 79866994751.

15749966897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15749966897 - 2⁶ = 15749966833 is a prime.

It is a super-2 number, since 2×15749966897² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15749966897.

It is not an unprimeable number, because it can be changed into a prime (15749966891) 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 15 ways as a sum of consecutive naturals, for example, 1784147 + ... + 1792952.

It is an arithmetic number, because the mean of its divisors is an integer number (1223368200).

Almost surely, 2^15749966897 is an apocalyptic number.

15749966897 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

15749966897 is a deficient number, since it is larger than the sum of its proper divisors (3823924303).

15749966897 is a wasteful number, since it uses less digits than its factorization.

15749966897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3577160.

The product of its digits is 205752960, while the sum is 71.

The spelling of 15749966897 in words is "fifteen billion, seven hundred forty-nine million, nine hundred sixty-six thousand, eight hundred ninety-seven".