140511051209 has 2 divisors, whose sum is σ = 140511051210. Its totient is φ = 140511051208.

The previous prime is 140511051203. The next prime is 140511051211. The reversal of 140511051209 is 902150115041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121641907984 + 18869143225 = 348772^2 + 137365^2 .

It is a cyclic number.

It is not a de Polignac number, because 140511051209 - 2²⁴ = 140494273993 is a prime.

Together with 140511051211, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140511051203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70255525604 + 70255525605.

It is an arithmetic number, because the mean of its divisors is an integer number (70255525605).

Almost surely, 2^140511051209 is an apocalyptic number.

It is an amenable number.

140511051209 is a deficient number, since it is larger than the sum of its proper divisors (1).

140511051209 is an equidigital number, since it uses as much as digits as its factorization.

140511051209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 29.

The spelling of 140511051209 in words is "one hundred forty billion, five hundred eleven million, fifty-one thousand, two hundred nine".