40173231824 has 80 divisors (see below), whose sum is σ = 90673482240. Its totient is φ = 17062080000.

The previous prime is 40173231809. The next prime is 40173231827. The reversal of 40173231824 is 42813237104.

It is a super-2 number, since 2×40173231824² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40173231827) 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 15 ways as a sum of consecutive naturals, for example, 31274 + ... + 285174.

It is an arithmetic number, because the mean of its divisors is an integer number (1133418528).

Almost surely, 2^40173231824 is an apocalyptic number.

40173231824 is a gapful number since it is divisible by the number (44) 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 40173231824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45336741120).

40173231824 is an abundant number, since it is smaller than the sum of its proper divisors (50500250416).

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

40173231824 is a wasteful number, since it uses less digits than its factorization.

40173231824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253980 (or 253974 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

Adding to 40173231824 its reverse (42813237104), we get a palindrome (82986468928).

The spelling of 40173231824 in words is "forty billion, one hundred seventy-three million, two hundred thirty-one thousand, eight hundred twenty-four".