421535240985600 has 5280 divisors, whose sum is σ = 1888905288990720. Its totient is φ = 90908163440640.

The previous prime is 421535240985541. The next prime is 421535240985619. The reversal of 421535240985600 is 6589042535124.

421535240985600 is a `hidden beast` number, since 4 + 2 + 1 + 5 + 3 + 5 + 24 + 0 + 9 + 8 + 5 + 600 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 479 ways as a sum of consecutive naturals, for example, 4092575155149 + ... + 4092575155251.

It is an arithmetic number, because the mean of its divisors is an integer number (357747213824).

Almost surely, 2^{421535240985600} is an apocalyptic number.

421535240985600 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 421535240985600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (944452644495360).

421535240985600 is an abundant number, since it is smaller than the sum of its proper divisors (1467370048005120).

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

421535240985600 is a wasteful number, since it uses less digits than its factorization.

421535240985600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357 (or 325 counting only the distinct ones).

The product of its (nonzero) digits is 10368000, while the sum is 54.

The spelling of 421535240985600 in words is "four hundred twenty-one trillion, five hundred thirty-five billion, two hundred forty million, nine hundred eighty-five thousand, six hundred".