634217712436 has 24 divisors (see below), whose sum is σ = 1383747736896. Its totient is φ = 247097809920.

The previous prime is 634217712433. The next prime is 634217712463.

It is a happy number.

634217712436 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634217712433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1029573901 + ... + 1029574516.

It is an arithmetic number, because the mean of its divisors is an integer number (57656155704).

Almost surely, 2^634217712436 is an apocalyptic number.

It is an amenable number.

634217712436 is an abundant number, since it is smaller than the sum of its proper divisors (749530024460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

634217712436 is a wasteful number, since it uses less digits than its factorization.

634217712436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2059148439 (or 2059148437 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 46.

The spelling of 634217712436 in words is "six hundred thirty-four billion, two hundred seventeen million, seven hundred twelve thousand, four hundred thirty-six".