63723328397 has 8 divisors (see below), whose sum is σ = 63794640000. Its totient is φ = 63652060224.

The previous prime is 63723328381. The next prime is 63723328421. The reversal of 63723328397 is 79382332736.

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 63723328397 - 2⁴ = 63723328381 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 (63723328307) 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, 3543254 + ... + 3561192.

It is an arithmetic number, because the mean of its divisors is an integer number (7974330000).

Almost surely, 2^63723328397 is an apocalyptic number.

It is an amenable number.

63723328397 is a deficient number, since it is larger than the sum of its proper divisors (71311603).

63723328397 is a wasteful number, since it uses less digits than its factorization.

63723328397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21715.

The product of its digits is 6858432, while the sum is 53.

The spelling of 63723328397 in words is "sixty-three billion, seven hundred twenty-three million, three hundred twenty-eight thousand, three hundred ninety-seven".