40273865129 has 2 divisors, whose sum is σ = 40273865130. Its totient is φ = 40273865128.

The previous prime is 40273865111. The next prime is 40273865167. The reversal of 40273865129 is 92156837204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38426584729 + 1847280400 = 196027^2 + 42980^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40273865129 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (40273865029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20136932564 + 20136932565.

It is an arithmetic number, because the mean of its divisors is an integer number (20136932565).

It is a 1-persistent number, because it is pandigital, but 2⋅40273865129 = 80547730258 is not.

Almost surely, 2^40273865129 is an apocalyptic number.

It is an amenable number.

40273865129 is a deficient number, since it is larger than the sum of its proper divisors (1).

40273865129 is an equidigital number, since it uses as much as digits as its factorization.

40273865129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 40273865129 in words is "forty billion, two hundred seventy-three million, eight hundred sixty-five thousand, one hundred twenty-nine".