42361987579 has 4 divisors (see below), whose sum is σ = 42470887680. Its totient is φ = 42253087480.

The previous prime is 42361987573. The next prime is 42361987607. The reversal of 42361987579 is 97578916324.

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

It is a cyclic number.

It is not a de Polignac number, because 42361987579 - 2⁹ = 42361987067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42361987573) 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, 54449467 + ... + 54450244.

It is an arithmetic number, because the mean of its divisors is an integer number (10617721920).

Almost surely, 2^42361987579 is an apocalyptic number.

42361987579 is a deficient number, since it is larger than the sum of its proper divisors (108900101).

42361987579 is a wasteful number, since it uses less digits than its factorization.

42361987579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108900100.

The product of its digits is 22861440, while the sum is 61.

The spelling of 42361987579 in words is "forty-two billion, three hundred sixty-one million, nine hundred eighty-seven thousand, five hundred seventy-nine".