42363553109 has 2 divisors, whose sum is σ = 42363553110. Its totient is φ = 42363553108.

The previous prime is 42363553103. The next prime is 42363553181. The reversal of 42363553109 is 90135536324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34085282884 + 8278270225 = 184622^2 + 90985^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42363553109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42363553103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21181776554 + 21181776555.

It is an arithmetic number, because the mean of its divisors is an integer number (21181776555).

Almost surely, 2^42363553109 is an apocalyptic number.

It is an amenable number.

42363553109 is a deficient number, since it is larger than the sum of its proper divisors (1).

42363553109 is an equidigital number, since it uses as much as digits as its factorization.

42363553109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 291600, while the sum is 41.

The spelling of 42363553109 in words is "forty-two billion, three hundred sixty-three million, five hundred fifty-three thousand, one hundred nine".