42687280856 has 32 divisors (see below), whose sum is σ = 88511000400. Its totient is φ = 19137507840.

The previous prime is 42687280843. The next prime is 42687280861. The reversal of 42687280856 is 65808278624.

It is a happy number.

42687280856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×42687280856³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

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, 3316061 + ... + 3328908.

Almost surely, 2^42687280856 is an apocalyptic number.

It is an amenable number.

42687280856 is an abundant number, since it is smaller than the sum of its proper divisors (45823719544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42687280856 is a wasteful number, since it uses less digits than its factorization.

42687280856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6645059 (or 6645055 counting only the distinct ones).

The product of its (nonzero) digits is 10321920, while the sum is 56.

The spelling of 42687280856 in words is "forty-two billion, six hundred eighty-seven million, two hundred eighty thousand, eight hundred fifty-six".