42545664236 has 24 divisors (see below), whose sum is σ = 76528134144. Its totient is φ = 20684921040.

The previous prime is 42545664191. The next prime is 42545664263. The reversal of 42545664236 is 63246654524.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 516260 + ... + 592971.

It is an arithmetic number, because the mean of its divisors is an integer number (3188672256).

Almost surely, 2^42545664236 is an apocalyptic number.

It is an amenable number.

42545664236 is a deficient number, since it is larger than the sum of its proper divisors (33982469908).

42545664236 is a wasteful number, since it uses less digits than its factorization.

42545664236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109501 (or 1109499 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 47.

The spelling of 42545664236 in words is "forty-two billion, five hundred forty-five million, six hundred sixty-four thousand, two hundred thirty-six".