140155440121441 has 4 divisors (see below), whose sum is σ = 140443233633472. Its totient is φ = 139867646609412.

The previous prime is 140155440121391. The next prime is 140155440121469. The reversal of 140155440121441 is 144121044551041.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 140155440121441 - 2⁹ = 140155440120929 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140155440121441.

It is not an unprimeable number, because it can be changed into a prime (140155440121481) 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, 143896755285 + ... + 143896756258.

It is an arithmetic number, because the mean of its divisors is an integer number (35110808408368).

Almost surely, 2^{140155440121441} is an apocalyptic number.

It is an amenable number.

140155440121441 is a deficient number, since it is larger than the sum of its proper divisors (287793512031).

140155440121441 is an equidigital number, since it uses as much as digits as its factorization.

140155440121441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287793512030.

The product of its (nonzero) digits is 51200, while the sum is 37.

Adding to 140155440121441 its reverse (144121044551041), we get a palindrome (284276484672482).

The spelling of 140155440121441 in words is "one hundred forty trillion, one hundred fifty-five billion, four hundred forty million, one hundred twenty-one thousand, four hundred forty-one".