16340289979 has 4 divisors (see below), whose sum is σ = 17597235376. Its totient is φ = 15083344584.

The previous prime is 16340289967. The next prime is 16340290009. The reversal of 16340289979 is 97998204361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97998204361 = 2081 ⋅47091881.

It is a cyclic number.

It is not a de Polignac number, because 16340289979 - 2⁹ = 16340289467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16340289919) 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, 628472679 + ... + 628472704.

It is an arithmetic number, because the mean of its divisors is an integer number (4399308844).

Almost surely, 2^16340289979 is an apocalyptic number.

16340289979 is a deficient number, since it is larger than the sum of its proper divisors (1256945397).

16340289979 is a wasteful number, since it uses less digits than its factorization.

16340289979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256945396.

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

The spelling of 16340289979 in words is "sixteen billion, three hundred forty million, two hundred eighty-nine thousand, nine hundred seventy-nine".