421503158868 has 48 divisors (see below), whose sum is σ = 1073001607104. Its totient is φ = 127718173440.

The previous prime is 421503158833. The next prime is 421503158873. The reversal of 421503158868 is 868851305124.

It is a self number, because there is not a number n which added to its sum of digits gives 421503158868.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1652046 + ... + 1890042.

It is an arithmetic number, because the mean of its divisors is an integer number (22354200148).

Almost surely, 2^421503158868 is an apocalyptic number.

It is an amenable number.

421503158868 is an abundant number, since it is smaller than the sum of its proper divisors (651498448236).

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

421503158868 is a wasteful number, since it uses less digits than its factorization.

421503158868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251432 (or 251430 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 51.

The spelling of 421503158868 in words is "four hundred twenty-one billion, five hundred three million, one hundred fifty-eight thousand, eight hundred sixty-eight".