42549887556 has 72 divisors (see below), whose sum is σ = 118941941664. Its totient is φ = 12717267840.

The previous prime is 42549887539. The next prime is 42549887563. The reversal of 42549887556 is 65578894524.

42549887556 is a `hidden beast` number, since 4 + 2 + 549 + 8 + 87 + 5 + 5 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 42549887493 and 42549887502.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 707046 + ... + 764861.

It is an arithmetic number, because the mean of its divisors is an integer number (1651971412).

Almost surely, 2^42549887556 is an apocalyptic number.

It is an amenable number.

42549887556 is an abundant number, since it is smaller than the sum of its proper divisors (76392054108).

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

42549887556 is a wasteful number, since it uses less digits than its factorization.

42549887556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472001 (or 1471996 counting only the distinct ones).

The product of its digits is 96768000, while the sum is 63.

The spelling of 42549887556 in words is "forty-two billion, five hundred forty-nine million, eight hundred eighty-seven thousand, five hundred fifty-six".