634432553524423 has 4 divisors (see below), whose sum is σ = 634436385105240. Its totient is φ = 634428721943608.

The previous prime is 634432553524333. The next prime is 634432553524501. The reversal of 634432553524423 is 324425355234436.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-634432553524423 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 (634432583524423) 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, 1915542028 + ... + 1915873201.

It is an arithmetic number, because the mean of its divisors is an integer number (158609096276310).

Almost surely, 2^{634432553524423} is an apocalyptic number.

634432553524423 is a deficient number, since it is larger than the sum of its proper divisors (3831580817).

634432553524423 is a wasteful number, since it uses less digits than its factorization.

634432553524423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3831580816.

The product of its digits is 124416000, while the sum is 55.

The spelling of 634432553524423 in words is "six hundred thirty-four trillion, four hundred thirty-two billion, five hundred fifty-three million, five hundred twenty-four thousand, four hundred twenty-three".