428106563378 has 16 divisors (see below), whose sum is σ = 693050418816. Its totient is φ = 197160883920.

The previous prime is 428106563359. The next prime is 428106563431. The reversal of 428106563378 is 873365601824.

It is a happy number.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17769428 + ... + 17793503.

It is an arithmetic number, because the mean of its divisors is an integer number (43315651176).

Almost surely, 2^428106563378 is an apocalyptic number.

428106563378 is a deficient number, since it is larger than the sum of its proper divisors (264943855438).

428106563378 is a wasteful number, since it uses less digits than its factorization.

428106563378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35563409.

The product of its (nonzero) digits is 5806080, while the sum is 53.

The spelling of 428106563378 in words is "four hundred twenty-eight billion, one hundred six million, five hundred sixty-three thousand, three hundred seventy-eight".