420730663079 has 2 divisors, whose sum is σ = 420730663080. Its totient is φ = 420730663078.

The previous prime is 420730662991. The next prime is 420730663097. The reversal of 420730663079 is 970366037024.

Together with next prime (420730663097) 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 a de Polignac number, because none of the positive numbers 2^k-420730663079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420730663579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210365331539 + 210365331540.

It is an arithmetic number, because the mean of its divisors is an integer number (210365331540).

Almost surely, 2^420730663079 is an apocalyptic number.

420730663079 is a deficient number, since it is larger than the sum of its proper divisors (1).

420730663079 is an equidigital number, since it uses as much as digits as its factorization.

420730663079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1143072, while the sum is 47.

The spelling of 420730663079 in words is "four hundred twenty billion, seven hundred thirty million, six hundred sixty-three thousand, seventy-nine".