140444444081 has 2 divisors, whose sum is σ = 140444444082. Its totient is φ = 140444444080.

The previous prime is 140444444039. The next prime is 140444444087. The reversal of 140444444081 is 180444444041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98166915856 + 42277528225 = 313316^2 + 205615^2 .

It is a cyclic number.

It is not a de Polignac number, because 140444444081 - 2¹⁰ = 140444443057 is a prime.

It is a super-2 number, since 2×140444444081² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (140444444087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70222222040 + 70222222041.

It is an arithmetic number, because the mean of its divisors is an integer number (70222222041).

Almost surely, 2^140444444081 is an apocalyptic number.

It is an amenable number.

140444444081 is a deficient number, since it is larger than the sum of its proper divisors (1).

140444444081 is an equidigital number, since it uses as much as digits as its factorization.

140444444081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 131072, while the sum is 38.

The spelling of 140444444081 in words is "one hundred forty billion, four hundred forty-four million, four hundred forty-four thousand, eighty-one".