8438997450240 has 1920 divisors, whose sum is σ = 37305903697920. Its totient is φ = 1796559077376.

The previous prime is 8438997450239. The next prime is 8438997450269. The reversal of 8438997450240 is 420547998348.

8438997450240 is a `hidden beast` number, since 8 + 4 + 3 + 89 + 9 + 7 + 4 + 502 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (1920).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 5930426169 + ... + 5930427591.

It is an arithmetic number, because the mean of its divisors is an integer number (19430158176).

Almost surely, 2^{8438997450240} is an apocalyptic number.

8438997450240 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 8438997450240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18652951848960).

8438997450240 is an abundant number, since it is smaller than the sum of its proper divisors (28866906247680).

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

8438997450240 is a wasteful number, since it uses less digits than its factorization.

8438997450240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1589 (or 1560 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 63.

The spelling of 8438997450240 in words is "eight trillion, four hundred thirty-eight billion, nine hundred ninety-seven million, four hundred fifty thousand, two hundred forty".