40804523898 has 8 divisors (see below), whose sum is σ = 81609047808. Its totient is φ = 13601507964.

The previous prime is 40804523897. The next prime is 40804523909. The reversal of 40804523898 is 89832540804.

It is a sphenic number, since it is the product of 3 distinct primes.

40804523898 is an admirable number.

It is a super-2 number, since 2×40804523898² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40804523898.

It is not an unprimeable number, because it can be changed into a prime (40804523891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3400376986 + ... + 3400376997.

It is an arithmetic number, because the mean of its divisors is an integer number (10201130976).

Almost surely, 2^40804523898 is an apocalyptic number.

40804523898 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40804523898 is a wasteful number, since it uses less digits than its factorization.

40804523898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6800753988.

The product of its (nonzero) digits is 2211840, while the sum is 51.

The spelling of 40804523898 in words is "forty billion, eight hundred four million, five hundred twenty-three thousand, eight hundred ninety-eight".