40555135782 has 128 divisors (see below), whose sum is σ = 107207193600. Its totient is φ = 11118498048.

The previous prime is 40555135781. The next prime is 40555135801. The reversal of 40555135782 is 28753155504.

40555135782 is a `hidden beast` number, since 4 + 0 + 5 + 5 + 513 + 57 + 82 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40555135781) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1775458 + ... + 1798154.

It is an arithmetic number, because the mean of its divisors is an integer number (837556200).

Almost surely, 2^40555135782 is an apocalyptic number.

40555135782 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 40555135782, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53603596800).

40555135782 is an abundant number, since it is smaller than the sum of its proper divisors (66652057818).

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

40555135782 is a wasteful number, since it uses less digits than its factorization.

40555135782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22907 (or 22901 counting only the distinct ones).

The product of its (nonzero) digits is 840000, while the sum is 45.

The spelling of 40555135782 in words is "forty billion, five hundred fifty-five million, one hundred thirty-five thousand, seven hundred eighty-two".