421503622838 has 8 divisors (see below), whose sum is σ = 665532036120. Its totient is φ = 199659610800.

The previous prime is 421503622831. The next prime is 421503622843. The reversal of 421503622838 is 838226305124.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421503622831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5546100263 + ... + 5546100338.

It is an arithmetic number, because the mean of its divisors is an integer number (83191504515).

Almost surely, 2^421503622838 is an apocalyptic number.

421503622838 is a deficient number, since it is larger than the sum of its proper divisors (244028413282).

421503622838 is a wasteful number, since it uses less digits than its factorization.

421503622838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11092200622.

The product of its (nonzero) digits is 552960, while the sum is 44.

The spelling of 421503622838 in words is "four hundred twenty-one billion, five hundred three million, six hundred twenty-two thousand, eight hundred thirty-eight".