42660660659 has 24 divisors (see below), whose sum is σ = 47264856912. Its totient is φ = 38368563200.

The previous prime is 42660660643. The next prime is 42660660661. The reversal of 42660660659 is 95606606624.

It is not a de Polignac number, because 42660660659 - 2⁴ = 42660660643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42660660059) 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 23 ways as a sum of consecutive naturals, for example, 14396312 + ... + 14399274.

It is an arithmetic number, because the mean of its divisors is an integer number (1969369038).

Almost surely, 2^42660660659 is an apocalyptic number.

42660660659 is a deficient number, since it is larger than the sum of its proper divisors (4604196253).

42660660659 is a wasteful number, since it uses less digits than its factorization.

42660660659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4627 (or 4604 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 50.

The spelling of 42660660659 in words is "forty-two billion, six hundred sixty million, six hundred sixty thousand, six hundred fifty-nine".