656565111042 has 16 divisors (see below), whose sum is σ = 1322715115872. Its totient is φ = 217257554720.

The previous prime is 656565111017. The next prime is 656565111049. The reversal of 656565111042 is 240111565656.

It is a junction number, because it is equal to n+sod(n) for n = 656565110985 and 656565111003.

It is not an unprimeable number, because it can be changed into a prime (656565111049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 399369684 + ... + 399371327.

It is an arithmetic number, because the mean of its divisors is an integer number (82669694742).

Almost surely, 2^656565111042 is an apocalyptic number.

656565111042 is an abundant number, since it is smaller than the sum of its proper divisors (666150004830).

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

656565111042 is a wasteful number, since it uses less digits than its factorization.

656565111042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798741153.

The product of its (nonzero) digits is 216000, while the sum is 42.

Adding to 656565111042 its reverse (240111565656), we get a palindrome (896676676698).

The spelling of 656565111042 in words is "six hundred fifty-six billion, five hundred sixty-five million, one hundred eleven thousand, forty-two".