140444340100261 has 2 divisors, whose sum is σ = 140444340100262. Its totient is φ = 140444340100260.

The previous prime is 140444340100153. The next prime is 140444340100331. The reversal of 140444340100261 is 162001043444041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76156497179361 + 64287842920900 = 8726769^2 + 8017970^2 .

It is a cyclic number.

It is not a de Polignac number, because 140444340100261 - 2¹⁹ = 140444339575973 is a prime.

It is a super-2 number, since 2×140444340100261² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140444340100061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70222170050130 + 70222170050131.

It is an arithmetic number, because the mean of its divisors is an integer number (70222170050131).

Almost surely, 2^{140444340100261} is an apocalyptic number.

It is an amenable number.

140444340100261 is a deficient number, since it is larger than the sum of its proper divisors (1).

140444340100261 is an equidigital number, since it uses as much as digits as its factorization.

140444340100261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864, while the sum is 34.

The spelling of 140444340100261 in words is "one hundred forty trillion, four hundred forty-four billion, three hundred forty million, one hundred thousand, two hundred sixty-one".