421335250164 has 72 divisors (see below), whose sum is σ = 1069186390272. Its totient is φ = 139899170880.

The previous prime is 421335250157. The next prime is 421335250207. The reversal of 421335250164 is 461052533124.

421335250164 is a `hidden beast` number, since 4 + 213 + 35 + 250 + 164 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17711382 + ... + 17735154.

It is an arithmetic number, because the mean of its divisors is an integer number (14849810976).

Almost surely, 2^421335250164 is an apocalyptic number.

It is an amenable number.

421335250164 is an abundant number, since it is smaller than the sum of its proper divisors (647851140108).

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

421335250164 is a wasteful number, since it uses less digits than its factorization.

421335250164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25677 (or 25672 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 421335250164 its reverse (461052533124), we get a palindrome (882387783288).

The spelling of 421335250164 in words is "four hundred twenty-one billion, three hundred thirty-five million, two hundred fifty thousand, one hundred sixty-four".