42165804911 has 2 divisors, whose sum is σ = 42165804912. Its totient is φ = 42165804910.

The previous prime is 42165804907. The next prime is 42165804931. The reversal of 42165804911 is 11940856124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42165804911 - 2² = 42165804907 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42165804931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21082902455 + 21082902456.

It is an arithmetic number, because the mean of its divisors is an integer number (21082902456).

Almost surely, 2^42165804911 is an apocalyptic number.

42165804911 is a deficient number, since it is larger than the sum of its proper divisors (1).

42165804911 is an equidigital number, since it uses as much as digits as its factorization.

42165804911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 41.

The spelling of 42165804911 in words is "forty-two billion, one hundred sixty-five million, eight hundred four thousand, nine hundred eleven".