634013888223 has 16 divisors (see below), whose sum is σ = 846394200320. Its totient is φ = 422154887616.

The previous prime is 634013888203. The next prime is 634013888237. The reversal of 634013888223 is 322888310436.

It is a happy number.

It is not a de Polignac number, because 634013888223 - 2²⁹ = 633477017311 is a prime.

It is a super-2 number, since 2×634013888223² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634013888203) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 26971011 + ... + 26994507.

It is an arithmetic number, because the mean of its divisors is an integer number (52899637520).

Almost surely, 2^634013888223 is an apocalyptic number.

634013888223 is a deficient number, since it is larger than the sum of its proper divisors (212380312097).

634013888223 is a wasteful number, since it uses less digits than its factorization.

634013888223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34206.

The product of its (nonzero) digits is 1327104, while the sum is 48.

The spelling of 634013888223 in words is "six hundred thirty-four billion, thirteen million, eight hundred eighty-eight thousand, two hundred twenty-three".