42018636628 has 24 divisors (see below), whose sum is σ = 75252304512. Its totient is φ = 20518103424.

The previous prime is 42018636613. The next prime is 42018636631. The reversal of 42018636628 is 82663681024.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2636901 + ... + 2652787.

It is an arithmetic number, because the mean of its divisors is an integer number (3135512688).

Almost surely, 2^42018636628 is an apocalyptic number.

It is an amenable number.

42018636628 is a deficient number, since it is larger than the sum of its proper divisors (33233667884).

42018636628 is a wasteful number, since it uses less digits than its factorization.

42018636628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31311 (or 31309 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 46.

The spelling of 42018636628 in words is "forty-two billion, eighteen million, six hundred thirty-six thousand, six hundred twenty-eight".