40245127709 has 2 divisors, whose sum is σ = 40245127710. Its totient is φ = 40245127708.

The previous prime is 40245127697. The next prime is 40245127733. The reversal of 40245127709 is 90772154204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30154322500 + 10090805209 = 173650^2 + 100453^2 .

It is a cyclic number.

It is not a de Polignac number, because 40245127709 - 2²⁸ = 39976692253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40245127759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20122563854 + 20122563855.

It is an arithmetic number, because the mean of its divisors is an integer number (20122563855).

Almost surely, 2^40245127709 is an apocalyptic number.

It is an amenable number.

40245127709 is a deficient number, since it is larger than the sum of its proper divisors (1).

40245127709 is an equidigital number, since it uses as much as digits as its factorization.

40245127709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141120, while the sum is 41.

The spelling of 40245127709 in words is "forty billion, two hundred forty-five million, one hundred twenty-seven thousand, seven hundred nine".