633276650021 has 4 divisors (see below), whose sum is σ = 633328144044. Its totient is φ = 633225156000.

The previous prime is 633276650011. The next prime is 633276650059. The reversal of 633276650021 is 120056672336.

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 258440056900 + 374836593121 = 508370^2 + 612239^2 .

It is a cyclic number.

It is not a de Polignac number, because 633276650021 - 2²⁶ = 633209541157 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 (633276650011) 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, 25728560 + ... + 25753161.

It is an arithmetic number, because the mean of its divisors is an integer number (158332036011).

Almost surely, 2^633276650021 is an apocalyptic number.

It is an amenable number.

633276650021 is a deficient number, since it is larger than the sum of its proper divisors (51494023).

633276650021 is a wasteful number, since it uses less digits than its factorization.

633276650021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51494022.

The product of its (nonzero) digits is 272160, while the sum is 41.

The spelling of 633276650021 in words is "six hundred thirty-three billion, two hundred seventy-six million, six hundred fifty thousand, twenty-one".