63006533021 has 4 divisors (see below), whose sum is σ = 63595379232. Its totient is φ = 62417686812.

The previous prime is 63006532993. The next prime is 63006533041. The reversal of 63006533021 is 12033560036.

It is a happy number.

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 63006533021 - 2¹⁴ = 63006516637 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 (63006533041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294422945 + ... + 294423158.

It is an arithmetic number, because the mean of its divisors is an integer number (15898844808).

Almost surely, 2^63006533021 is an apocalyptic number.

It is an amenable number.

63006533021 is a deficient number, since it is larger than the sum of its proper divisors (588846211).

63006533021 is a wasteful number, since it uses less digits than its factorization.

63006533021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588846210.

The product of its (nonzero) digits is 9720, while the sum is 29.

The spelling of 63006533021 in words is "sixty-three billion, six million, five hundred thirty-three thousand, twenty-one".