40165737730309 has 2 divisors, whose sum is σ = 40165737730310. Its totient is φ = 40165737730308.

The previous prime is 40165737730177. The next prime is 40165737730337. The reversal of 40165737730309 is 90303773756104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36049180785409 + 4116556944900 = 6004097^2 + 2028930^2 .

It is a cyclic number.

It is not a de Polignac number, because 40165737730309 - 2⁹ = 40165737729797 is a prime.

It is a super-2 number, since 2×40165737730309² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40165737730309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40165737730009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20082868865154 + 20082868865155.

It is an arithmetic number, because the mean of its divisors is an integer number (20082868865155).

Almost surely, 2^{40165737730309} is an apocalyptic number.

It is an amenable number.

40165737730309 is a deficient number, since it is larger than the sum of its proper divisors (1).

40165737730309 is an equidigital number, since it uses as much as digits as its factorization.

40165737730309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10001880, while the sum is 55.

The spelling of 40165737730309 in words is "forty trillion, one hundred sixty-five billion, seven hundred thirty-seven million, seven hundred thirty thousand, three hundred nine".