633438407066 has 16 divisors (see below), whose sum is σ = 950917786560. Its totient is φ = 316465872480.

The previous prime is 633438407059. The next prime is 633438407101. The reversal of 633438407066 is 660704834336.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 43566950 + ... + 43581486.

It is an arithmetic number, because the mean of its divisors is an integer number (59432361660).

Almost surely, 2^633438407066 is an apocalyptic number.

633438407066 is a deficient number, since it is larger than the sum of its proper divisors (317479379494).

633438407066 is a wasteful number, since it uses less digits than its factorization.

633438407066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30469.

The product of its (nonzero) digits is 5225472, while the sum is 50.

The spelling of 633438407066 in words is "six hundred thirty-three billion, four hundred thirty-eight million, four hundred seven thousand, sixty-six".