63216577621 has 8 divisors (see below), whose sum is σ = 66995904384. Its totient is φ = 59443995840.

The previous prime is 63216577607. The next prime is 63216577631. The reversal of 63216577621 is 12677561236.

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 63216577621 - 2¹¹ = 63216575573 is a prime.

It is a super-2 number, since 2×63216577621² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63216577631) 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, 1666935 + ... + 1704436.

It is an arithmetic number, because the mean of its divisors is an integer number (8374488048).

Almost surely, 2^63216577621 is an apocalyptic number.

It is an amenable number.

63216577621 is a deficient number, since it is larger than the sum of its proper divisors (3779326763).

63216577621 is a wasteful number, since it uses less digits than its factorization.

63216577621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3372491.

The product of its digits is 635040, while the sum is 46.

The spelling of 63216577621 in words is "sixty-three billion, two hundred sixteen million, five hundred seventy-seven thousand, six hundred twenty-one".