40400004004320 has 48 divisors (see below), whose sum is σ = 127260012615120. Its totient is φ = 10773334401024.

The previous prime is 40400004004303. The next prime is 40400004004337. The reversal of 40400004004320 is 2340040000404.

It is an interprime number because it is at equal distance from previous prime (40400004004303) and next prime (40400004004337).

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42083337025 + ... + 42083337984.

It is an arithmetic number, because the mean of its divisors is an integer number (2651250262815).

Almost surely, 2^{40400004004320} is an apocalyptic number.

40400004004320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40400004004320 is an abundant number, since it is smaller than the sum of its proper divisors (86860008610800).

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

40400004004320 is a wasteful number, since it uses less digits than its factorization.

40400004004320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84166675027 (or 84166675019 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

Adding to 40400004004320 its reverse (2340040000404), we get a palindrome (42740044004724).

The spelling of 40400004004320 in words is "forty trillion, four hundred billion, four million, four thousand, three hundred twenty".