42661255256 has 32 divisors (see below), whose sum is σ = 84216230400. Its totient is φ = 20204030880.

The previous prime is 42661255211. The next prime is 42661255271. The reversal of 42661255256 is 65255216624.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 848501 + ... + 897371.

It is an arithmetic number, because the mean of its divisors is an integer number (2631757200).

Almost surely, 2^42661255256 is an apocalyptic number.

It is an amenable number.

42661255256 is a deficient number, since it is larger than the sum of its proper divisors (41554975144).

42661255256 is a wasteful number, since it uses less digits than its factorization.

42661255256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54639 (or 54635 counting only the distinct ones).

The product of its digits is 864000, while the sum is 44.

The spelling of 42661255256 in words is "forty-two billion, six hundred sixty-one million, two hundred fifty-five thousand, two hundred fifty-six".