40389026809600 has 432 divisors, whose sum is σ = 120127909446720. Its totient is φ = 13150951833600.

The previous prime is 40389026809597. The next prime is 40389026809693. The reversal of 40389026809600 is 690862098304.

It is a happy number.

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, 78996384 + ... + 79506016.

It is an arithmetic number, because the mean of its divisors is an integer number (278073864460).

Almost surely, 2^{40389026809600} is an apocalyptic number.

40389026809600 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 40389026809600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60063954723360).

40389026809600 is an abundant number, since it is smaller than the sum of its proper divisors (79738882637120).

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

40389026809600 is a wasteful number, since it uses less digits than its factorization.

40389026809600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509756 (or 509737 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 55.

The spelling of 40389026809600 in words is "forty trillion, three hundred eighty-nine billion, twenty-six million, eight hundred nine thousand, six hundred".