636467342812 has 48 divisors (see below), whose sum is σ = 1325751694848. Its totient is φ = 261661458240.

The previous prime is 636467342809. The next prime is 636467342827. The reversal of 636467342812 is 218243764636.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 636467342812.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 4252858 + ... + 4399969.

It is an arithmetic number, because the mean of its divisors is an integer number (27619826976).

Almost surely, 2^636467342812 is an apocalyptic number.

It is an amenable number.

636467342812 is an abundant number, since it is smaller than the sum of its proper divisors (689284352036).

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

636467342812 is a wasteful number, since it uses less digits than its factorization.

636467342812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8652946 (or 8652944 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 52.

The spelling of 636467342812 in words is "six hundred thirty-six billion, four hundred sixty-seven million, three hundred forty-two thousand, eight hundred twelve".