421513760624 has 80 divisors (see below), whose sum is σ = 900249642240. Its totient is φ = 189595054080.

The previous prime is 421513760621. The next prime is 421513760641. The reversal of 421513760624 is 426067315124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421513760621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26440784 + ... + 26456720.

It is an arithmetic number, because the mean of its divisors is an integer number (11253120528).

Almost surely, 2^421513760624 is an apocalyptic number.

421513760624 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 421513760624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (450124821120).

421513760624 is an abundant number, since it is smaller than the sum of its proper divisors (478735881616).

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

421513760624 is a wasteful number, since it uses less digits than its factorization.

421513760624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17518 (or 17512 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 421513760624 in words is "four hundred twenty-one billion, five hundred thirteen million, seven hundred sixty thousand, six hundred twenty-four".