420698880079 has 2 divisors, whose sum is σ = 420698880080. Its totient is φ = 420698880078.

The previous prime is 420698879981. The next prime is 420698880097. The reversal of 420698880079 is 970088896024.

Together with next prime (420698880097) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420698880079 - 2¹¹ = 420698878031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420698879999 and 420698880026.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420698880179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210349440039 + 210349440040.

It is an arithmetic number, because the mean of its divisors is an integer number (210349440040).

Almost surely, 2^420698880079 is an apocalyptic number.

420698880079 is a deficient number, since it is larger than the sum of its proper divisors (1).

420698880079 is an equidigital number, since it uses as much as digits as its factorization.

420698880079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13934592, while the sum is 61.

The spelling of 420698880079 in words is "four hundred twenty billion, six hundred ninety-eight million, eight hundred eighty thousand, seventy-nine".