42116891099 has 2 divisors, whose sum is σ = 42116891100. Its totient is φ = 42116891098.

The previous prime is 42116891087. The next prime is 42116891107. The reversal of 42116891099 is 99019861124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42116891099 - 2⁴ = 42116891083 is a prime.

It is not a weakly prime, because it can be changed into another prime (42116891029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21058445549 + 21058445550.

It is an arithmetic number, because the mean of its divisors is an integer number (21058445550).

Almost surely, 2^42116891099 is an apocalyptic number.

42116891099 is a deficient number, since it is larger than the sum of its proper divisors (1).

42116891099 is an equidigital number, since it uses as much as digits as its factorization.

42116891099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 50.

The spelling of 42116891099 in words is "forty-two billion, one hundred sixteen million, eight hundred ninety-one thousand, ninety-nine".