426859778923 has 2 divisors, whose sum is σ = 426859778924. Its totient is φ = 426859778922.

The previous prime is 426859778881. The next prime is 426859778951. The reversal of 426859778923 is 329877958624.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426859778923 is a prime.

It is a super-3 number, since 3×426859778923³ (a number of 36 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (426859770923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213429889461 + 213429889462.

It is an arithmetic number, because the mean of its divisors is an integer number (213429889462).

Almost surely, 2^426859778923 is an apocalyptic number.

426859778923 is a deficient number, since it is larger than the sum of its proper divisors (1).

426859778923 is an equidigital number, since it uses as much as digits as its factorization.

426859778923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 365783040, while the sum is 70.

The spelling of 426859778923 in words is "four hundred twenty-six billion, eight hundred fifty-nine million, seven hundred seventy-eight thousand, nine hundred twenty-three".