2421431335440 has 960 divisors, whose sum is σ = 9490432573440. Its totient is φ = 548385361920.

The previous prime is 2421431335387. The next prime is 2421431335451. The reversal of 2421431335440 is 445331341242.

2421431335440 is a `hidden beast` number, since 2 + 42 + 1 + 43 + 1 + 33 + 544 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2421431335395 and 2421431335404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1194587707 + ... + 1194589733.

It is an arithmetic number, because the mean of its divisors is an integer number (9885867264).

Almost surely, 2^{2421431335440} is an apocalyptic number.

2421431335440 is a gapful number since it is divisible by the number (20) 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 2421431335440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4745216286720).

2421431335440 is an abundant number, since it is smaller than the sum of its proper divisors (7069001238000).

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

2421431335440 is a wasteful number, since it uses less digits than its factorization.

2421431335440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2292 (or 2283 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

Adding to 2421431335440 its reverse (445331341242), we get a palindrome (2866762676682).

The spelling of 2421431335440 in words is "two trillion, four hundred twenty-one billion, four hundred thirty-one million, three hundred thirty-five thousand, four hundred forty".