40400143023320 has 64 divisors (see below), whose sum is σ = 92215240611840. Its totient is φ = 15926464892800.

The previous prime is 40400143023287. The next prime is 40400143023329. The reversal of 40400143023320 is 2332034100404.

40400143023320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 40400143023320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40400143023329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4891985 + ... + 10233855.

It is an arithmetic number, because the mean of its divisors is an integer number (1440863134560).

Almost surely, 2^{40400143023320} is an apocalyptic number.

40400143023320 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 40400143023320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46107620305920).

40400143023320 is an abundant number, since it is smaller than the sum of its proper divisors (51815097588520).

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

40400143023320 is a wasteful number, since it uses less digits than its factorization.

40400143023320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5344616 (or 5344612 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 40400143023320 its reverse (2332034100404), we get a palindrome (42732177123724).

The spelling of 40400143023320 in words is "forty trillion, four hundred billion, one hundred forty-three million, twenty-three thousand, three hundred twenty".