440431312040155 has 16 divisors (see below), whose sum is σ = 528866605410624. Its totient is φ = 352112396215680.

The previous prime is 440431312040081. The next prime is 440431312040177. The reversal of 440431312040155 is 551040213134044.

It is a happy number.

It is not a de Polignac number, because 440431312040155 - 2⁴⁵ = 405246939951323 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102189250 + ... + 106411960.

It is an arithmetic number, because the mean of its divisors is an integer number (33054162838164).

Almost surely, 2^{440431312040155} is an apocalyptic number.

440431312040155 is a deficient number, since it is larger than the sum of its proper divisors (88435293370469).

440431312040155 is a wasteful number, since it uses less digits than its factorization.

440431312040155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4236486.

The product of its (nonzero) digits is 115200, while the sum is 37.

Adding to 440431312040155 its reverse (551040213134044), we get a palindrome (991471525174199).

The spelling of 440431312040155 in words is "four hundred forty trillion, four hundred thirty-one billion, three hundred twelve million, forty thousand, one hundred fifty-five".