279488411689679 has 2 divisors, whose sum is σ = 279488411689680. Its totient is φ = 279488411689678.

The previous prime is 279488411689667. The next prime is 279488411689793. The reversal of 279488411689679 is 976986114884972.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-279488411689679 is a prime.

It is a super-2 number, since 2×279488411689679² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 279488411689594 and 279488411689603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (279488411689979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139744205844839 + 139744205844840.

It is an arithmetic number, because the mean of its divisors is an integer number (139744205844840).

Almost surely, 2^{279488411689679} is an apocalyptic number.

279488411689679 is a deficient number, since it is larger than the sum of its proper divisors (1).

279488411689679 is an equidigital number, since it uses as much as digits as its factorization.

279488411689679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21069103104, while the sum is 89.

The spelling of 279488411689679 in words is "two hundred seventy-nine trillion, four hundred eighty-eight billion, four hundred eleven million, six hundred eighty-nine thousand, six hundred seventy-nine".