406978974630079 has 2 divisors, whose sum is σ = 406978974630080. Its totient is φ = 406978974630078.

The previous prime is 406978974630073. The next prime is 406978974630121. The reversal of 406978974630079 is 970036479879604.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 406978974630079 - 2¹⁵ = 406978974597311 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 406978974629990 and 406978974630008.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406978974630073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203489487315039 + 203489487315040.

It is an arithmetic number, because the mean of its divisors is an integer number (203489487315040).

Almost surely, 2^{406978974630079} is an apocalyptic number.

406978974630079 is a deficient number, since it is larger than the sum of its proper divisors (1).

406978974630079 is an equidigital number, since it uses as much as digits as its factorization.

406978974630079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456649728, while the sum is 79.

The spelling of 406978974630079 in words is "four hundred six trillion, nine hundred seventy-eight billion, nine hundred seventy-four million, six hundred thirty thousand, seventy-nine".