7565661487242 has 24 divisors (see below), whose sum is σ = 16450189770144. Its totient is φ = 2512975898664.

The previous prime is 7565661487231. The next prime is 7565661487247. The reversal of 7565661487242 is 2427841665657.

7565661487242 is a `hidden beast` number, since 7 + 5 + 6 + 5 + 6 + 614 + 8 + 7 + 2 + 4 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 7565661487242.

It is not an unprimeable number, because it can be changed into a prime (7565661487247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 742600078 + ... + 742610265.

It is an arithmetic number, because the mean of its divisors is an integer number (685424573756).

Almost surely, 2^{7565661487242} is an apocalyptic number.

7565661487242 is an abundant number, since it is smaller than the sum of its proper divisors (8884528282902).

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

7565661487242 is a wasteful number, since it uses less digits than its factorization.

7565661487242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1485210634 (or 1485210631 counting only the distinct ones).

The product of its digits is 135475200, while the sum is 63.

The spelling of 7565661487242 in words is "seven trillion, five hundred sixty-five billion, six hundred sixty-one million, four hundred eighty-seven thousand, two hundred forty-two".