16279839049 has 4 divisors (see below), whose sum is σ = 16282541764. Its totient is φ = 16277136336.

The previous prime is 16279839029. The next prime is 16279839077. The reversal of 16279839049 is 94093897261.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8136040000 + 8143799049 = 90200^2 + 90243^2 .

It is a cyclic number.

It is not a de Polignac number, because 16279839049 - 2¹¹ = 16279837001 is a prime.

It is a super-2 number, since 2×16279839049² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16279838984 and 16279839002.

It is not an unprimeable number, because it can be changed into a prime (16279839029) 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, 1342302 + ... + 1354375.

It is an arithmetic number, because the mean of its divisors is an integer number (4070635441).

Almost surely, 2^16279839049 is an apocalyptic number.

It is an amenable number.

16279839049 is a deficient number, since it is larger than the sum of its proper divisors (2702715).

16279839049 is an equidigital number, since it uses as much as digits as its factorization.

16279839049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2702714.

The product of its (nonzero) digits is 5878656, while the sum is 58.

The spelling of 16279839049 in words is "sixteen billion, two hundred seventy-nine million, eight hundred thirty-nine thousand, forty-nine".