634483390578 has 32 divisors (see below), whose sum is σ = 1338093968640. Its totient is φ = 200012256720.

The previous prime is 634483390577. The next prime is 634483390589. The reversal of 634483390578 is 875093384436.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (634483390571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4808500 + ... + 4938687.

It is an arithmetic number, because the mean of its divisors is an integer number (41815436520).

Almost surely, 2^634483390578 is an apocalyptic number.

634483390578 is an abundant number, since it is smaller than the sum of its proper divisors (703610578062).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

634483390578 is a wasteful number, since it uses less digits than its factorization.

634483390578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9747782.

The product of its (nonzero) digits is 52254720, while the sum is 60.

The spelling of 634483390578 in words is "six hundred thirty-four billion, four hundred eighty-three million, three hundred ninety thousand, five hundred seventy-eight".