43542599040 has 384 divisors, whose sum is σ = 158468244480. Its totient is φ = 10995240960.

The previous prime is 43542599011. The next prime is 43542599071. The reversal of 43542599040 is 4099524534.

43542599040 is a `hidden beast` number, since 4 + 3 + 54 + 2 + 599 + 0 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a super-3 number, since 3×43542599040³ (a number of 33 digits) contains 333 as substring.

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 polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13643845 + ... + 13647035.

It is an arithmetic number, because the mean of its divisors is an integer number (412677720).

Almost surely, 2^43542599040 is an apocalyptic number.

43542599040 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 43542599040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79234122240).

43542599040 is an abundant number, since it is smaller than the sum of its proper divisors (114925645440).

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

43542599040 is a wasteful number, since it uses less digits than its factorization.

43542599040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3342 (or 3327 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 43542599040 in words is "forty-three billion, five hundred forty-two million, five hundred ninety-nine thousand, forty".