634733616403 has 4 divisors (see below), whose sum is σ = 638279614440. Its totient is φ = 631187618368.

The previous prime is 634733616371. The next prime is 634733616487. The reversal of 634733616403 is 304616337436.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 634733616403 - 2⁵ = 634733616371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634733616203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1772998750 + ... + 1772999107.

It is an arithmetic number, because the mean of its divisors is an integer number (159569903610).

Almost surely, 2^634733616403 is an apocalyptic number.

634733616403 is a deficient number, since it is larger than the sum of its proper divisors (3545998037).

634733616403 is a wasteful number, since it uses less digits than its factorization.

634733616403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3545998036.

The product of its (nonzero) digits is 1959552, while the sum is 46.

The spelling of 634733616403 in words is "six hundred thirty-four billion, seven hundred thirty-three million, six hundred sixteen thousand, four hundred three".