814484521440 has 288 divisors, whose sum is σ = 2923229627136. Its totient is φ = 206223114240.

The previous prime is 814484521393. The next prime is 814484521481. The reversal of 814484521440 is 44125484418.

It is a happy number.

814484521440 is a `hidden beast` number, since 8 + 1 + 4 + 4 + 84 + 521 + 4 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 2193792 + ... + 2538048.

It is an arithmetic number, because the mean of its divisors is an integer number (10150102872).

Almost surely, 2^814484521440 is an apocalyptic number.

814484521440 is a gapful number since it is divisible by the number (80) 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 814484521440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1461614813568).

814484521440 is an abundant number, since it is smaller than the sum of its proper divisors (2108745105696).

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

814484521440 is a wasteful number, since it uses less digits than its factorization.

814484521440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344362 (or 344351 counting only the distinct ones).

The product of its (nonzero) digits is 655360, while the sum is 45.

The spelling of 814484521440 in words is "eight hundred fourteen billion, four hundred eighty-four million, five hundred twenty-one thousand, four hundred forty".