421804632744 has 192 divisors, whose sum is σ = 1303706664000. Its totient is φ = 122024770560.

The previous prime is 421804632731. The next prime is 421804632811. The reversal of 421804632744 is 447236408124.

421804632744 is a `hidden beast` number, since 4 + 2 + 1 + 8 + 0 + 4 + 632 + 7 + 4 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 421804632744.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1940979 + ... + 2147325.

It is an arithmetic number, because the mean of its divisors is an integer number (6790138875).

Almost surely, 2^421804632744 is an apocalyptic number.

421804632744 is a gapful number since it is divisible by the number (44) 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 421804632744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (651853332000).

421804632744 is an abundant number, since it is smaller than the sum of its proper divisors (881902031256).

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

421804632744 is a wasteful number, since it uses less digits than its factorization.

421804632744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206488 (or 206481 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 45.

The spelling of 421804632744 in words is "four hundred twenty-one billion, eight hundred four million, six hundred thirty-two thousand, seven hundred forty-four".