63694968223 has 4 divisors (see below), whose sum is σ = 63698577040. Its totient is φ = 63691359408.

The previous prime is 63694968221. The next prime is 63694968301. The reversal of 63694968223 is 32286949636.

It is a happy number.

63694968223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 63694968223 - 2¹ = 63694968221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63694968221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1777803 + ... + 1813276.

It is an arithmetic number, because the mean of its divisors is an integer number (15924644260).

Almost surely, 2^63694968223 is an apocalyptic number.

63694968223 is a deficient number, since it is larger than the sum of its proper divisors (3608817).

63694968223 is a wasteful number, since it uses less digits than its factorization.

63694968223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3608816.

The product of its digits is 20155392, while the sum is 58.

The spelling of 63694968223 in words is "sixty-three billion, six hundred ninety-four million, nine hundred sixty-eight thousand, two hundred twenty-three".