63221169479 has 4 divisors (see below), whose sum is σ = 68084336376. Its totient is φ = 58358002584.

The previous prime is 63221169443. The next prime is 63221169493. The reversal of 63221169479 is 97496112236.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63221169479 is a prime.

It is a super-2 number, since 2×63221169479² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63221166479) 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, 2431583429 + ... + 2431583454.

It is an arithmetic number, because the mean of its divisors is an integer number (17021084094).

Almost surely, 2^63221169479 is an apocalyptic number.

63221169479 is a deficient number, since it is larger than the sum of its proper divisors (4863166897).

63221169479 is a wasteful number, since it uses less digits than its factorization.

63221169479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4863166896.

The product of its digits is 979776, while the sum is 50.

The spelling of 63221169479 in words is "sixty-three billion, two hundred twenty-one million, one hundred sixty-nine thousand, four hundred seventy-nine".