1440111540061 has 4 divisors (see below), whose sum is σ = 1524823983612. Its totient is φ = 1355399096512.

The previous prime is 1440111540059. The next prime is 1440111540071. The reversal of 1440111540061 is 1600451110441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 659353744036 + 780757796025 = 812006^2 + 883605^2 .

It is a cyclic number.

It is not a de Polignac number, because 1440111540061 - 2¹ = 1440111540059 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440111540001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42356221750 + ... + 42356221783.

It is an arithmetic number, because the mean of its divisors is an integer number (381205995903).

Almost surely, 2^{1440111540061} is an apocalyptic number.

It is an amenable number.

1440111540061 is a deficient number, since it is larger than the sum of its proper divisors (84712443551).

1440111540061 is an equidigital number, since it uses as much as digits as its factorization.

1440111540061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84712443550.

The product of its (nonzero) digits is 1920, while the sum is 28.

The spelling of 1440111540061 in words is "one trillion, four hundred forty billion, one hundred eleven million, five hundred forty thousand, sixty-one".