40165140643 has 2 divisors, whose sum is σ = 40165140644. Its totient is φ = 40165140642.

The previous prime is 40165140581. The next prime is 40165140647. The reversal of 40165140643 is 34604156104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40165140643 - 2¹⁷ = 40165009571 is a prime.

It is a super-2 number, since 2×40165140643² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40165140599 and 40165140608.

It is not a weakly prime, because it can be changed into another prime (40165140647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20082570321 + 20082570322.

It is an arithmetic number, because the mean of its divisors is an integer number (20082570322).

Almost surely, 2^40165140643 is an apocalyptic number.

40165140643 is a deficient number, since it is larger than the sum of its proper divisors (1).

40165140643 is an equidigital number, since it uses as much as digits as its factorization.

40165140643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 34.

Adding to 40165140643 its reverse (34604156104), we get a palindrome (74769296747).

The spelling of 40165140643 in words is "forty billion, one hundred sixty-five million, one hundred forty thousand, six hundred forty-three".