140044421081 has 2 divisors, whose sum is σ = 140044421082. Its totient is φ = 140044421080.

The previous prime is 140044421053. The next prime is 140044421087. The reversal of 140044421081 is 180124440041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132216595456 + 7827825625 = 363616^2 + 88475^2 .

It is a cyclic number.

It is not a de Polignac number, because 140044421081 - 2¹⁴ = 140044404697 is a prime.

It is a super-2 number, since 2×140044421081² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (140044421087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70022210540 + 70022210541.

It is an arithmetic number, because the mean of its divisors is an integer number (70022210541).

Almost surely, 2^140044421081 is an apocalyptic number.

It is an amenable number.

140044421081 is a deficient number, since it is larger than the sum of its proper divisors (1).

140044421081 is an equidigital number, since it uses as much as digits as its factorization.

140044421081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4096, while the sum is 29.

The spelling of 140044421081 in words is "one hundred forty billion, forty-four million, four hundred twenty-one thousand, eighty-one".