140155541013209 has 2 divisors, whose sum is σ = 140155541013210. Its totient is φ = 140155541013208.

The previous prime is 140155541013143. The next prime is 140155541013253. The reversal of 140155541013209 is 902310145551041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76513997683984 + 63641543329225 = 8747228^2 + 7977565^2 .

It is a cyclic number.

It is not a de Polignac number, because 140155541013209 - 2⁴⁴ = 122563354968793 is a prime.

It is not a weakly prime, because it can be changed into another prime (140155541015209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70077770506604 + 70077770506605.

It is an arithmetic number, because the mean of its divisors is an integer number (70077770506605).

Almost surely, 2^{140155541013209} is an apocalyptic number.

It is an amenable number.

140155541013209 is a deficient number, since it is larger than the sum of its proper divisors (1).

140155541013209 is an equidigital number, since it uses as much as digits as its factorization.

140155541013209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108000, while the sum is 41.

The spelling of 140155541013209 in words is "one hundred forty trillion, one hundred fifty-five billion, five hundred forty-one million, thirteen thousand, two hundred nine".