42221988168 has 32 divisors (see below), whose sum is σ = 110144318400. Its totient is φ = 13462083008.

The previous prime is 42221988113. The next prime is 42221988181. The reversal of 42221988168 is 86188912224.

It is a self number, because there is not a number n which added to its sum of digits gives 42221988168.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38244003 + ... + 38245106.

It is an arithmetic number, because the mean of its divisors is an integer number (3442009950).

Almost surely, 2^42221988168 is an apocalyptic number.

It is an amenable number.

42221988168 is an abundant number, since it is smaller than the sum of its proper divisors (67922330232).

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

42221988168 is a wasteful number, since it uses less digits than its factorization.

42221988168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76489141 (or 76489137 counting only the distinct ones).

The product of its digits is 884736, while the sum is 51.

The spelling of 42221988168 in words is "forty-two billion, two hundred twenty-one million, nine hundred eighty-eight thousand, one hundred sixty-eight".