63673632643 has 8 divisors (see below), whose sum is σ = 63839366640. Its totient is φ = 63507968160.

The previous prime is 63673632641. The next prime is 63673632661. The reversal of 63673632643 is 34623637636.

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 63673632643 - 2¹ = 63673632641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63673632641) 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, 2169996 + ... + 2199142.

It is an arithmetic number, because the mean of its divisors is an integer number (7979920830).

Almost surely, 2^63673632643 is an apocalyptic number.

63673632643 is a deficient number, since it is larger than the sum of its proper divisors (165733997).

63673632643 is a wasteful number, since it uses less digits than its factorization.

63673632643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34757.

The product of its digits is 5878656, while the sum is 49.

The spelling of 63673632643 in words is "sixty-three billion, six hundred seventy-three million, six hundred thirty-two thousand, six hundred forty-three".