42108793913 has 2 divisors, whose sum is σ = 42108793914. Its totient is φ = 42108793912.

The previous prime is 42108793901. The next prime is 42108793939. The reversal of 42108793913 is 31939780124.

42108793913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40163366464 + 1945427449 = 200408^2 + 44107^2 .

It is a cyclic number.

It is not a de Polignac number, because 42108793913 - 2²² = 42104599609 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (42108793313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21054396956 + 21054396957.

It is an arithmetic number, because the mean of its divisors is an integer number (21054396957).

Almost surely, 2^42108793913 is an apocalyptic number.

It is an amenable number.

42108793913 is a deficient number, since it is larger than the sum of its proper divisors (1).

42108793913 is an equidigital number, since it uses as much as digits as its factorization.

42108793913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 47.

The spelling of 42108793913 in words is "forty-two billion, one hundred eight million, seven hundred ninety-three thousand, nine hundred thirteen".