40830785869 has 2 divisors, whose sum is σ = 40830785870. Its totient is φ = 40830785868.

The previous prime is 40830785839. The next prime is 40830785887. The reversal of 40830785869 is 96858703804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33018524100 + 7812261769 = 181710^2 + 88387^2 .

It is a cyclic number.

It is not a de Polignac number, because 40830785869 - 2¹⁷ = 40830654797 is a prime.

It is a super-2 number, since 2×40830785869² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40830785839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20415392934 + 20415392935.

It is an arithmetic number, because the mean of its divisors is an integer number (20415392935).

Almost surely, 2^40830785869 is an apocalyptic number.

It is an amenable number.

40830785869 is a deficient number, since it is larger than the sum of its proper divisors (1).

40830785869 is an equidigital number, since it uses as much as digits as its factorization.

40830785869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11612160, while the sum is 58.

The spelling of 40830785869 in words is "forty billion, eight hundred thirty million, seven hundred eighty-five thousand, eight hundred sixty-nine".