1440204605161 has 32 divisors (see below), whose sum is σ = 1676845939968. Its totient is φ = 1211513856000.

The previous prime is 1440204605153. The next prime is 1440204605197. The reversal of 1440204605161 is 1615064020441.

It is not a de Polignac number, because 1440204605161 - 2³ = 1440204605153 is a prime.

It is a super-3 number, since 3×1440204605161³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1440204605261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 338630511 + ... + 338634763.

It is an arithmetic number, because the mean of its divisors is an integer number (52401435624).

Almost surely, 2^{1440204605161} is an apocalyptic number.

It is an amenable number.

1440204605161 is a deficient number, since it is larger than the sum of its proper divisors (236641334807).

1440204605161 is a wasteful number, since it uses less digits than its factorization.

1440204605161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8481.

The product of its (nonzero) digits is 23040, while the sum is 34.

The spelling of 1440204605161 in words is "one trillion, four hundred forty billion, two hundred four million, six hundred five thousand, one hundred sixty-one".