20632626533 has 4 divisors (see below), whose sum is σ = 20652601068. Its totient is φ = 20612652000.

The previous prime is 20632626529. The next prime is 20632626559. The reversal of 20632626533 is 33562623602.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18230940484 + 2401686049 = 135022^2 + 49007^2 .

It is a cyclic number.

It is not a de Polignac number, because 20632626533 - 2² = 20632626529 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 (20632626563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9985718 + ... + 9987783.

It is an arithmetic number, because the mean of its divisors is an integer number (5163150267).

Almost surely, 2^20632626533 is an apocalyptic number.

It is an amenable number.

20632626533 is a deficient number, since it is larger than the sum of its proper divisors (19974535).

20632626533 is a wasteful number, since it uses less digits than its factorization.

20632626533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19974534.

The product of its (nonzero) digits is 233280, while the sum is 38.

The spelling of 20632626533 in words is "twenty billion, six hundred thirty-two million, six hundred twenty-six thousand, five hundred thirty-three".