40691800000 has 84 divisors (see below), whose sum is σ = 100928774520. Its totient is φ = 16276640000.

The previous prime is 40691799989. The next prime is 40691800001. The reversal of 40691800000 is 819604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40691800001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98271 + ... + 301729.

It is an arithmetic number, because the mean of its divisors is an integer number (1201533030).

Almost surely, 2^40691800000 is an apocalyptic number.

40691800000 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 40691800000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50464387260).

40691800000 is an abundant number, since it is smaller than the sum of its proper divisors (60236974520).

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

40691800000 is an frugal number, since it uses more digits than its factorization.

40691800000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203496 (or 203466 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The spelling of 40691800000 in words is "forty billion, six hundred ninety-one million, eight hundred thousand".