63609694403 has 4 divisors (see below), whose sum is σ = 63615028008. Its totient is φ = 63604360800.

The previous prime is 63609694381. The next prime is 63609694429. The reversal of 63609694403 is 30449690636.

It is a happy number.

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 63609694403 - 2⁸ = 63609694147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63609694303) 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, 2648873 + ... + 2672778.

It is an arithmetic number, because the mean of its divisors is an integer number (15903757002).

Almost surely, 2^63609694403 is an apocalyptic number.

63609694403 is a deficient number, since it is larger than the sum of its proper divisors (5333605).

63609694403 is a wasteful number, since it uses less digits than its factorization.

63609694403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5333604.

The product of its (nonzero) digits is 2519424, while the sum is 50.

The spelling of 63609694403 in words is "sixty-three billion, six hundred nine million, six hundred ninety-four thousand, four hundred three".