426681388778 has 8 divisors (see below), whose sum is σ = 644907748320. Its totient is φ = 211712139340.

The previous prime is 426681388751. The next prime is 426681388801. The reversal of 426681388778 is 877883186624.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 814277198 + ... + 814277721.

It is an arithmetic number, because the mean of its divisors is an integer number (80613468540).

Almost surely, 2^426681388778 is an apocalyptic number.

426681388778 is a deficient number, since it is larger than the sum of its proper divisors (218226359542).

426681388778 is a wasteful number, since it uses less digits than its factorization.

426681388778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1628555052.

The product of its digits is 173408256, while the sum is 68.

The spelling of 426681388778 in words is "four hundred twenty-six billion, six hundred eighty-one million, three hundred eighty-eight thousand, seven hundred seventy-eight".