421854147008 has 112 divisors (see below), whose sum is σ = 1013402819520. Its totient is φ = 170088923136.

The previous prime is 421854146983. The next prime is 421854147049. The reversal of 421854147008 is 800741458124.

It is a Cunningham number, because it is equal to 649503²-1.

It is a tau number, because it is divible by the number of its divisors (112).

It is a self number, because there is not a number n which added to its sum of digits gives 421854147008.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20773916 + ... + 20794212.

It is an arithmetic number, because the mean of its divisors is an integer number (9048239460).

Almost surely, 2^421854147008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421854147008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (506701409760).

421854147008 is an abundant number, since it is smaller than the sum of its proper divisors (591548672512).

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

421854147008 is a wasteful number, since it uses less digits than its factorization.

421854147008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23062 (or 23052 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 44.

The spelling of 421854147008 in words is "four hundred twenty-one billion, eight hundred fifty-four million, one hundred forty-seven thousand, eight".