63221966543 has 8 divisors (see below), whose sum is σ = 64297203840. Its totient is φ = 62151862360.

The previous prime is 63221966539. The next prime is 63221966557. The reversal of 63221966543 is 34566912236.

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 63221966543 - 2² = 63221966539 is a prime.

It is a super-2 number, since 2×63221966543² (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 (63221966593) 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, 1258433 + ... + 1307706.

It is an arithmetic number, because the mean of its divisors is an integer number (8037150480).

Almost surely, 2^63221966543 is an apocalyptic number.

63221966543 is a deficient number, since it is larger than the sum of its proper divisors (1075237297).

63221966543 is a wasteful number, since it uses less digits than its factorization.

63221966543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2566557.

The product of its digits is 1399680, while the sum is 47.

The spelling of 63221966543 in words is "sixty-three billion, two hundred twenty-one million, nine hundred sixty-six thousand, five hundred forty-three".