440166238863 has 16 divisors (see below), whose sum is σ = 632299155936. Its totient is φ = 270757710720.

The previous prime is 440166238823. The next prime is 440166238877. The reversal of 440166238863 is 368832661044.

It is a happy number.

It is not a de Polignac number, because 440166238863 - 2¹³ = 440166230671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440166238823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2277220 + ... + 2462937.

It is an arithmetic number, because the mean of its divisors is an integer number (39518697246).

Almost surely, 2^440166238863 is an apocalyptic number.

440166238863 is a deficient number, since it is larger than the sum of its proper divisors (192132917073).

440166238863 is a wasteful number, since it uses less digits than its factorization.

440166238863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4742554.

The product of its (nonzero) digits is 3981312, while the sum is 51.

The spelling of 440166238863 in words is "four hundred forty billion, one hundred sixty-six million, two hundred thirty-eight thousand, eight hundred sixty-three".