63621104639 has 8 divisors (see below), whose sum is σ = 65885014272. Its totient is φ = 61392847320.

The previous prime is 63621104621. The next prime is 63621104689. The reversal of 63621104639 is 93640112636.

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 63621104639 - 2⁸ = 63621104383 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63621104596 and 63621104605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63621104689) 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, 8909447 + ... + 8916584.

It is an arithmetic number, because the mean of its divisors is an integer number (8235626784).

Almost surely, 2^63621104639 is an apocalyptic number.

63621104639 is a deficient number, since it is larger than the sum of its proper divisors (2263909633).

63621104639 is a wasteful number, since it uses less digits than its factorization.

63621104639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17826157.

The product of its (nonzero) digits is 139968, while the sum is 41.

The spelling of 63621104639 in words is "sixty-three billion, six hundred twenty-one million, one hundred four thousand, six hundred thirty-nine".