111055666563 has 12 divisors (see below), whose sum is σ = 162067491768. Its totient is φ = 73273841280.

The previous prime is 111055666559. The next prime is 111055666597. The reversal of 111055666563 is 365666550111.

It is not a de Polignac number, because 111055666563 - 2² = 111055666559 is a prime.

It is a super-2 number, since 2×111055666563² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (111055666363) 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, 63604893 + ... + 63606638.

It is an arithmetic number, because the mean of its divisors is an integer number (13505624314).

Almost surely, 2^111055666563 is an apocalyptic number.

111055666563 is a deficient number, since it is larger than the sum of its proper divisors (51011825205).

111055666563 is a wasteful number, since it uses less digits than its factorization.

111055666563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127211634 (or 127211631 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 45.

The spelling of 111055666563 in words is "one hundred eleven billion, fifty-five million, six hundred sixty-six thousand, five hundred sixty-three".