111506543228941 has 16 divisors (see below), whose sum is σ = 128104160790528. Its totient is φ = 95075960601600.

The previous prime is 111506543228903. The next prime is 111506543228987. The reversal of 111506543228941 is 149822345605111.

It is a cyclic number.

It is not a de Polignac number, because 111506543228941 - 2¹⁷ = 111506543097869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111506543228141) 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, 312574111 + ... + 312930643.

It is an arithmetic number, because the mean of its divisors is an integer number (8006510049408).

Almost surely, 2^{111506543228941} is an apocalyptic number.

It is an amenable number.

111506543228941 is a deficient number, since it is larger than the sum of its proper divisors (16597617561587).

111506543228941 is a wasteful number, since it uses less digits than its factorization.

111506543228941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590652.

The product of its (nonzero) digits is 2073600, while the sum is 52.

The spelling of 111506543228941 in words is "one hundred eleven trillion, five hundred six billion, five hundred forty-three million, two hundred twenty-eight thousand, nine hundred forty-one".