42668577577 has 4 divisors (see below), whose sum is σ = 42672149136. Its totient is φ = 42665006020.

The previous prime is 42668577541. The next prime is 42668577587. The reversal of 42668577577 is 77577586624.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42668577577 - 2⁷ = 42668577449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42668577517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1767799 + ... + 1791772.

It is an arithmetic number, because the mean of its divisors is an integer number (10668037284).

Almost surely, 2^42668577577 is an apocalyptic number.

It is an amenable number.

42668577577 is a deficient number, since it is larger than the sum of its proper divisors (3571559).

42668577577 is a wasteful number, since it uses less digits than its factorization.

42668577577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3571558.

The product of its digits is 138297600, while the sum is 64.

The spelling of 42668577577 in words is "forty-two billion, six hundred sixty-eight million, five hundred seventy-seven thousand, five hundred seventy-seven".