42312161566 has 12 divisors (see below), whose sum is σ = 65732272632. Its totient is φ = 20426559944.

The previous prime is 42312161513. The next prime is 42312161569. The reversal of 42312161566 is 66516121324.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42312161569) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12576250 + ... + 12579613.

It is an arithmetic number, because the mean of its divisors is an integer number (5477689386).

Almost surely, 2^42312161566 is an apocalyptic number.

42312161566 is a deficient number, since it is larger than the sum of its proper divisors (23420111066).

42312161566 is a wasteful number, since it uses less digits than its factorization.

42312161566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25155923 (or 25155894 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The spelling of 42312161566 in words is "forty-two billion, three hundred twelve million, one hundred sixty-one thousand, five hundred sixty-six".