42660556306 has 4 divisors (see below), whose sum is σ = 63990834462. Its totient is φ = 21330278152.

The previous prime is 42660556283. The next prime is 42660556327. The reversal of 42660556306 is 60365506624.

42660556306 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 41081209225 + 1579347081 = 202685^2 + 39741^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10665139075 + ... + 10665139078.

Almost surely, 2^42660556306 is an apocalyptic number.

42660556306 is a deficient number, since it is larger than the sum of its proper divisors (21330278156).

42660556306 is a wasteful number, since it uses less digits than its factorization.

42660556306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21330278155.

The product of its (nonzero) digits is 777600, while the sum is 43.

The spelling of 42660556306 in words is "forty-two billion, six hundred sixty million, five hundred fifty-six thousand, three hundred six".