16723501979 has 2 divisors, whose sum is σ = 16723501980. Its totient is φ = 16723501978.

The previous prime is 16723501973. The next prime is 16723502041. The reversal of 16723501979 is 97910532761.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16723501979 - 2²⁰ = 16722453403 is a prime.

It is not a weakly prime, because it can be changed into another prime (16723501973) 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 as a sum of consecutive naturals, namely, 8361750989 + 8361750990.

It is an arithmetic number, because the mean of its divisors is an integer number (8361750990).

Almost surely, 2^16723501979 is an apocalyptic number.

16723501979 is a deficient number, since it is larger than the sum of its proper divisors (1).

16723501979 is an equidigital number, since it uses as much as digits as its factorization.

16723501979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 714420, while the sum is 50.

The spelling of 16723501979 in words is "sixteen billion, seven hundred twenty-three million, five hundred one thousand, nine hundred seventy-nine".