634861258312 has 64 divisors (see below), whose sum is σ = 1245161808000. Its totient is φ = 303075032064.

The previous prime is 634861258289. The next prime is 634861258313. The reversal of 634861258312 is 213852168436.

It is not an unprimeable number, because it can be changed into a prime (634861258313) 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, 11481243 + ... + 11536405.

It is an arithmetic number, because the mean of its divisors is an integer number (19455653250).

Almost surely, 2^634861258312 is an apocalyptic number.

It is an amenable number.

634861258312 is a deficient number, since it is larger than the sum of its proper divisors (610300549688).

634861258312 is a wasteful number, since it uses less digits than its factorization.

634861258312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55750 (or 55746 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 49.

The spelling of 634861258312 in words is "six hundred thirty-four billion, eight hundred sixty-one million, two hundred fifty-eight thousand, three hundred twelve".