111521362666564 has 12 divisors (see below), whose sum is σ = 195162605448300. Its totient is φ = 55760618252768.

The previous prime is 111521362666517. The next prime is 111521362666601. The reversal of 111521362666564 is 465666263125111.

It can be written as a sum of positive squares in 2 ways, for example, as 62416446566464 + 49104916100100 = 7900408^2 + 7007490^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11674099 + ... + 18955930.

It is an arithmetic number, because the mean of its divisors is an integer number (16263550454025).

Almost surely, 2^{111521362666564} is an apocalyptic number.

It is an amenable number.

111521362666564 is a deficient number, since it is larger than the sum of its proper divisors (83641242781736).

111521362666564 is a wasteful number, since it uses less digits than its factorization.

111521362666564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31540262 (or 31540260 counting only the distinct ones).

The product of its digits is 9331200, while the sum is 55.

The spelling of 111521362666564 in words is "one hundred eleven trillion, five hundred twenty-one billion, three hundred sixty-two million, six hundred sixty-six thousand, five hundred sixty-four".