1155567155566 has 32 divisors (see below), whose sum is σ = 1826879075136. Its totient is φ = 547113600000.

The previous prime is 1155567155557. The next prime is 1155567155569. The reversal of 1155567155566 is 6655517655511.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1155567155566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155567155569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45987486 + ... + 46012606.

It is an arithmetic number, because the mean of its divisors is an integer number (57089971098).

Almost surely, 2^{1155567155566} is an apocalyptic number.

1155567155566 is a deficient number, since it is larger than the sum of its proper divisors (671311919570).

1155567155566 is a wasteful number, since it uses less digits than its factorization.

1155567155566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35148.

The product of its digits is 23625000, while the sum is 58.

The spelling of 1155567155566 in words is "one trillion, one hundred fifty-five billion, five hundred sixty-seven million, one hundred fifty-five thousand, five hundred sixty-six".