111365155545 has 16 divisors (see below), whose sum is σ = 203639141760. Its totient is φ = 50909785344.

The previous prime is 111365155543. The next prime is 111365155631. The reversal of 111365155545 is 545551563111.

It is a happy number.

It is not a de Polignac number, because 111365155545 - 2¹ = 111365155543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111365155497 and 111365155506.

It is not an unprimeable number, because it can be changed into a prime (111365155543) 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, 530310160 + ... + 530310369.

It is an arithmetic number, because the mean of its divisors is an integer number (12727446360).

Almost surely, 2^111365155545 is an apocalyptic number.

111365155545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111365155545 is a deficient number, since it is larger than the sum of its proper divisors (92273986215).

111365155545 is a wasteful number, since it uses less digits than its factorization.

111365155545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060620544.

The product of its digits is 225000, while the sum is 42.

The spelling of 111365155545 in words is "one hundred eleven billion, three hundred sixty-five million, one hundred fifty-five thousand, five hundred forty-five".