111551066115606 has 36 divisors (see below), whose sum is σ = 261715962816828. Its totient is φ = 34323404957712.

The previous prime is 111551066115553. The next prime is 111551066115647. The reversal of 111551066115606 is 606511660155111.

111551066115606 is a `hidden beast` number, since 1 + 1 + 1 + 5 + 5 + 10 + 66 + 11 + 560 + 6 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 18335149180 + ... + 18335155263.

It is an arithmetic number, because the mean of its divisors is an integer number (7269887856023).

Almost surely, 2^{111551066115606} is an apocalyptic number.

111551066115606 is an abundant number, since it is smaller than the sum of its proper divisors (150164896701222).

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

111551066115606 is a wasteful number, since it uses less digits than its factorization.

111551066115606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36670304477 (or 36670304461 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 45.

The spelling of 111551066115606 in words is "one hundred eleven trillion, five hundred fifty-one billion, sixty-six million, one hundred fifteen thousand, six hundred six".