8453433785940 has 432 divisors, whose sum is σ = 31302563140800. Its totient is φ = 1891675019520.

The previous prime is 8453433785879. The next prime is 8453433785959. The reversal of 8453433785940 is 495873343548.

It is a happy number.

8453433785940 is a `hidden beast` number, since 8 + 4 + 5 + 3 + 4 + 3 + 37 + 8 + 594 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 10659691 + ... + 11425229.

It is an arithmetic number, because the mean of its divisors is an integer number (72459636900).

Almost surely, 2^{8453433785940} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8453433785940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15651281570400).

8453433785940 is an abundant number, since it is smaller than the sum of its proper divisors (22849129354860).

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

8453433785940 is a wasteful number, since it uses less digits than its factorization.

8453433785940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765605 (or 765573 counting only the distinct ones).

The product of its (nonzero) digits is 174182400, while the sum is 63.

The spelling of 8453433785940 in words is "eight trillion, four hundred fifty-three billion, four hundred thirty-three million, seven hundred eighty-five thousand, nine hundred forty".