679142044369 has 2 divisors, whose sum is σ = 679142044370. Its totient is φ = 679142044368.

The previous prime is 679142044367. The next prime is 679142044403. The reversal of 679142044369 is 963440241976.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 364892107969 + 314249936400 = 604063^2 + 560580^2 .

It is a cyclic number.

It is not a de Polignac number, because 679142044369 - 2¹ = 679142044367 is a prime.

It is a super-2 number, since 2×679142044369² (a number of 24 digits) contains 22 as substring.

Together with 679142044367, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (679142044363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339571022184 + 339571022185.

It is an arithmetic number, because the mean of its divisors is an integer number (339571022185).

Almost surely, 2^679142044369 is an apocalyptic number.

It is an amenable number.

679142044369 is a deficient number, since it is larger than the sum of its proper divisors (1).

679142044369 is an equidigital number, since it uses as much as digits as its factorization.

679142044369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7838208, while the sum is 55.

The spelling of 679142044369 in words is "six hundred seventy-nine billion, one hundred forty-two million, forty-four thousand, three hundred sixty-nine".