140535122009 has 2 divisors, whose sum is σ = 140535122010. Its totient is φ = 140535122008.

The previous prime is 140535121891. The next prime is 140535122099. The reversal of 140535122009 is 900221535041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138291015625 + 2244106384 = 371875^2 + 47372^2 .

It is a cyclic number.

It is not a de Polignac number, because 140535122009 - 2¹² = 140535117913 is a prime.

It is not a weakly prime, because it can be changed into another prime (140535122099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70267561004 + 70267561005.

It is an arithmetic number, because the mean of its divisors is an integer number (70267561005).

Almost surely, 2^140535122009 is an apocalyptic number.

It is an amenable number.

140535122009 is a deficient number, since it is larger than the sum of its proper divisors (1).

140535122009 is an equidigital number, since it uses as much as digits as its factorization.

140535122009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 32.

The spelling of 140535122009 in words is "one hundred forty billion, five hundred thirty-five million, one hundred twenty-two thousand, nine".