42556241387566 has 8 divisors (see below), whose sum is σ = 64155137770800. Its totient is φ = 21171195463968.

The previous prime is 42556241387551. The next prime is 42556241387573. The reversal of 42556241387566 is 66578314265524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×42556241387566² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42556241387498 and 42556241387507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53462614411 + ... + 53462615206.

It is an arithmetic number, because the mean of its divisors is an integer number (8019392221350).

Almost surely, 2^{42556241387566} is an apocalyptic number.

42556241387566 is a deficient number, since it is larger than the sum of its proper divisors (21598896383234).

42556241387566 is a wasteful number, since it uses less digits than its factorization.

42556241387566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106925229818.

The product of its digits is 290304000, while the sum is 64.

The spelling of 42556241387566 in words is "forty-two trillion, five hundred fifty-six billion, two hundred forty-one million, three hundred eighty-seven thousand, five hundred sixty-six".