42543563051640 has 256 divisors, whose sum is σ = 152876067102720. Its totient is φ = 9260473305600.

The previous prime is 42543563051611. The next prime is 42543563051657. The reversal of 42543563051640 is 4615036534524.

It is a self number, because there is not a number n which added to its sum of digits gives 42543563051640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 464686 + ... + 9235965.

It is an arithmetic number, because the mean of its divisors is an integer number (597172137120).

Almost surely, 2^{42543563051640} is an apocalyptic number.

42543563051640 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 42543563051640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76438033551360).

42543563051640 is an abundant number, since it is smaller than the sum of its proper divisors (110332504051080).

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

42543563051640 is a wasteful number, since it uses less digits than its factorization.

42543563051640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9700922 (or 9700918 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 48.

The spelling of 42543563051640 in words is "forty-two trillion, five hundred forty-three billion, five hundred sixty-three million, fifty-one thousand, six hundred forty".