1440520166163 has 8 divisors (see below), whose sum is σ = 2068439213008. Its totient is φ = 886473948384.

The previous prime is 1440520166051. The next prime is 1440520166227. The reversal of 1440520166163 is 3616610250441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1440520166163 - 2¹³ = 1440520157971 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 36936414517 = 1440520166163 / (1 + 4 + 4 + 0 + 5 + 2 + 0 + 1 + 6 + 6 + 1 + 6 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1440520116163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18468207220 + ... + 18468207297.

It is an arithmetic number, because the mean of its divisors is an integer number (258554901626).

Almost surely, 2^{1440520166163} is an apocalyptic number.

1440520166163 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1440520166163 is a deficient number, since it is larger than the sum of its proper divisors (627919046845).

1440520166163 is a wasteful number, since it uses less digits than its factorization.

1440520166163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36936414533.

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 1440520166163 in words is "one trillion, four hundred forty billion, five hundred twenty million, one hundred sixty-six thousand, one hundred sixty-three".