5163656321 has 4 divisors (see below), whose sum is σ = 5163870144. Its totient is φ = 5163442500.

The previous prime is 5163656293. The next prime is 5163656339. The reversal of 5163656321 is 1236563615.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5163656321 - 2⁶ = 5163656257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5163656371) 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, 65285 + ... + 120786.

It is an arithmetic number, because the mean of its divisors is an integer number (1290967536).

Almost surely, 2^5163656321 is an apocalyptic number.

It is an amenable number.

5163656321 is a deficient number, since it is larger than the sum of its proper divisors (213823).

5163656321 is a wasteful number, since it uses less digits than its factorization.

5163656321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213822.

The product of its digits is 97200, while the sum is 38.

The square root of 5163656321 is about 71858.5855761161. The cubic root of 5163656321 is about 1728.4325764278.

The spelling of 5163656321 in words is "five billion, one hundred sixty-three million, six hundred fifty-six thousand, three hundred twenty-one".