679443746441 has 2 divisors, whose sum is σ = 679443746442. Its totient is φ = 679443746440.

The previous prime is 679443746411. The next prime is 679443746491. The reversal of 679443746441 is 144647344976.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 647857570816 + 31586175625 = 804896^2 + 177725^2 .

It is a cyclic number.

It is not a de Polignac number, because 679443746441 - 2¹⁰ = 679443745417 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (679443746411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339721873220 + 339721873221.

It is an arithmetic number, because the mean of its divisors is an integer number (339721873221).

Almost surely, 2^679443746441 is an apocalyptic number.

It is an amenable number.

679443746441 is a deficient number, since it is larger than the sum of its proper divisors (1).

679443746441 is an equidigital number, since it uses as much as digits as its factorization.

679443746441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48771072, while the sum is 59.

The spelling of 679443746441 in words is "six hundred seventy-nine billion, four hundred forty-three million, seven hundred forty-six thousand, four hundred forty-one".