421871276160 has 640 divisors, whose sum is σ = 1553670201600. Its totient is φ = 109038182400.

The previous prime is 421871276159. The next prime is 421871276179. The reversal of 421871276160 is 61672178124.

421871276160 is a `hidden beast` number, since 4 + 2 + 1 + 8 + 7 + 1 + 27 + 616 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (640).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 224518101 + ... + 224519979.

It is an arithmetic number, because the mean of its divisors is an integer number (2427609690).

Almost surely, 2^421871276160 is an apocalyptic number.

421871276160 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421871276160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (776835100800).

421871276160 is an abundant number, since it is smaller than the sum of its proper divisors (1131798925440).

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

421871276160 is a wasteful number, since it uses less digits than its factorization.

421871276160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2042 (or 2021 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The spelling of 421871276160 in words is "four hundred twenty-one billion, eight hundred seventy-one million, two hundred seventy-six thousand, one hundred sixty".