631256875066 has 8 divisors (see below), whose sum is σ = 949614089760. Its totient is φ = 314718845148.

The previous prime is 631256875061. The next prime is 631256875133. The reversal of 631256875066 is 660578652136.

631256875066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 631256874998 and 631256875016.

It is not an unprimeable number, because it can be changed into a prime (631256875061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 454795326 + ... + 454796713.

It is an arithmetic number, because the mean of its divisors is an integer number (118701761220).

Almost surely, 2^631256875066 is an apocalyptic number.

631256875066 is a deficient number, since it is larger than the sum of its proper divisors (318357214694).

631256875066 is a wasteful number, since it uses less digits than its factorization.

631256875066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909592388.

The product of its (nonzero) digits is 10886400, while the sum is 55.

The spelling of 631256875066 in words is "six hundred thirty-one billion, two hundred fifty-six million, eight hundred seventy-five thousand, sixty-six".