42613011785 has 4 divisors (see below), whose sum is σ = 51135614148. Its totient is φ = 34090409424.

The previous prime is 42613011769. The next prime is 42613011799. The reversal of 42613011785 is 58711031624.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18178319929 + 24434691856 = 134827^2 + 156316^2 .

It is a cyclic number.

It is not a de Polignac number, because 42613011785 - 2⁴ = 42613011769 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4261301174 + ... + 4261301183.

It is an arithmetic number, because the mean of its divisors is an integer number (12783903537).

Almost surely, 2^42613011785 is an apocalyptic number.

It is an amenable number.

42613011785 is a deficient number, since it is larger than the sum of its proper divisors (8522602363).

42613011785 is an equidigital number, since it uses as much as digits as its factorization.

42613011785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8522602362.

The product of its (nonzero) digits is 40320, while the sum is 38.

The spelling of 42613011785 in words is "forty-two billion, six hundred thirteen million, eleven thousand, seven hundred eighty-five".