63678468621 has 8 divisors (see below), whose sum is σ = 86975469504. Its totient is φ = 41416890080.

The previous prime is 63678468613. The next prime is 63678468647. The reversal of 63678468621 is 12686487636.

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

It is a cyclic number.

It is not a de Polignac number, because 63678468621 - 2³ = 63678468613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63678468611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258855441 + ... + 258855686.

It is an arithmetic number, because the mean of its divisors is an integer number (10871933688).

Almost surely, 2^63678468621 is an apocalyptic number.

It is an amenable number.

63678468621 is a deficient number, since it is larger than the sum of its proper divisors (23297000883).

63678468621 is a wasteful number, since it uses less digits than its factorization.

63678468621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517711171.

The product of its digits is 13934592, while the sum is 57.

The spelling of 63678468621 in words is "sixty-three billion, six hundred seventy-eight million, four hundred sixty-eight thousand, six hundred twenty-one".