63812850621 has 32 divisors (see below), whose sum is σ = 91970629632. Its totient is φ = 39123156480.

The previous prime is 63812850613. The next prime is 63812850667. The reversal of 63812850621 is 12605821836.

It is not a de Polignac number, because 63812850621 - 2³ = 63812850613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63812150621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17818051 + ... + 17821631.

It is an arithmetic number, because the mean of its divisors is an integer number (2874082176).

Almost surely, 2^63812850621 is an apocalyptic number.

It is an amenable number.

63812850621 is a deficient number, since it is larger than the sum of its proper divisors (28157779011).

63812850621 is a wasteful number, since it uses less digits than its factorization.

63812850621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5173.

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 63812850621 in words is "sixty-three billion, eight hundred twelve million, eight hundred fifty thousand, six hundred twenty-one".