42512163613 has 4 divisors (see below), whose sum is σ = 42581515228. Its totient is φ = 42442812000.

The previous prime is 42512163583. The next prime is 42512163641. The reversal of 42512163613 is 31636121524.

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 3445455204 + 39066708409 = 58698^2 + 197653^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42512163613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42512163013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34674888 + ... + 34676113.

It is an arithmetic number, because the mean of its divisors is an integer number (10645378807).

Almost surely, 2^42512163613 is an apocalyptic number.

It is an amenable number.

42512163613 is a deficient number, since it is larger than the sum of its proper divisors (69351615).

42512163613 is an equidigital number, since it uses as much as digits as its factorization.

42512163613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69351614.

The product of its digits is 25920, while the sum is 34.

The spelling of 42512163613 in words is "forty-two billion, five hundred twelve million, one hundred sixty-three thousand, six hundred thirteen".