6172791979 has 2 divisors, whose sum is σ = 6172791980. Its totient is φ = 6172791978.

The previous prime is 6172791949. The next prime is 6172792019. The reversal of 6172791979 is 9791972716.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6172791979 is a prime.

It is not a weakly prime, because it can be changed into another prime (6172791949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3086395989 + 3086395990.

It is an arithmetic number, because the mean of its divisors is an integer number (3086395990).

Almost surely, 2^6172791979 is an apocalyptic number.

6172791979 is a deficient number, since it is larger than the sum of its proper divisors (1).

6172791979 is an equidigital number, since it uses as much as digits as its factorization.

6172791979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3000564, while the sum is 58.

The square root of 6172791979 is about 78567.1176701806. The cubic root of 6172791979 is about 1834.3993192136.

The spelling of 6172791979 in words is "six billion, one hundred seventy-two million, seven hundred ninety-one thousand, nine hundred seventy-nine".