42015606566 has 16 divisors (see below), whose sum is σ = 66354908400. Its totient is φ = 19897786368.

The previous prime is 42015606553. The next prime is 42015606583. The reversal of 42015606566 is 66560651024.

It is a super-2 number, since 2×42015606566² (a number of 22 digits) contains 22 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, 59270 + ... + 295878.

It is an arithmetic number, because the mean of its divisors is an integer number (4147181775).

Almost surely, 2^42015606566 is an apocalyptic number.

42015606566 is a deficient number, since it is larger than the sum of its proper divisors (24339301834).

42015606566 is a wasteful number, since it uses less digits than its factorization.

42015606566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241303.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 42015606566 in words is "forty-two billion, fifteen million, six hundred six thousand, five hundred sixty-six".