424640838138 has 32 divisors (see below), whose sum is σ = 958437005760. Its totient is φ = 124241832960.

The previous prime is 424640838113. The next prime is 424640838173. The reversal of 424640838138 is 831838046424.

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 15 ways as a sum of consecutive naturals, for example, 110928295 + ... + 110932122.

It is an arithmetic number, because the mean of its divisors is an integer number (29951156430).

Almost surely, 2^424640838138 is an apocalyptic number.

424640838138 is an abundant number, since it is smaller than the sum of its proper divisors (533796167622).

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

424640838138 is a wasteful number, since it uses less digits than its factorization.

424640838138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221860462.

The product of its (nonzero) digits is 3538944, while the sum is 51.

The spelling of 424640838138 in words is "four hundred twenty-four billion, six hundred forty million, eight hundred thirty-eight thousand, one hundred thirty-eight".