15966720341 has 16 divisors (see below), whose sum is σ = 18763297728. Its totient is φ = 13394937600.

The previous prime is 15966720317. The next prime is 15966720347. The reversal of 15966720341 is 14302766951.

It is not a de Polignac number, because 15966720341 - 2¹⁸ = 15966458197 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15966720292 and 15966720301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15966720347) 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 15 ways as a sum of consecutive naturals, for example, 583946 + ... + 610676.

It is an arithmetic number, because the mean of its divisors is an integer number (1172706108).

Almost surely, 2^15966720341 is an apocalyptic number.

15966720341 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

15966720341 is a deficient number, since it is larger than the sum of its proper divisors (2796577387).

15966720341 is a wasteful number, since it uses less digits than its factorization.

15966720341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30932.

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 15966720341 in words is "fifteen billion, nine hundred sixty-six million, seven hundred twenty thousand, three hundred forty-one".