42638796508 has 36 divisors (see below), whose sum is σ = 93734882416. Its totient is φ = 16612516800.

The previous prime is 42638796419. The next prime is 42638796533. The reversal of 42638796508 is 80569783624.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6289233 + ... + 6296008.

Almost surely, 2^42638796508 is an apocalyptic number.

It is an amenable number.

42638796508 is an abundant number, since it is smaller than the sum of its proper divisors (51096085908).

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

42638796508 is a wasteful number, since it uses less digits than its factorization.

42638796508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12585274 (or 12585261 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 58.

The spelling of 42638796508 in words is "forty-two billion, six hundred thirty-eight million, seven hundred ninety-six thousand, five hundred eight".