111355320545 has 32 divisors (see below), whose sum is σ = 153623520000. Its totient is φ = 75905335296.

The previous prime is 111355320511. The next prime is 111355320563. The reversal of 111355320545 is 545023553111.

It is not a de Polignac number, because 111355320545 - 2⁶ = 111355320481 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4476101 + ... + 4500909.

It is an arithmetic number, because the mean of its divisors is an integer number (4800735000).

Almost surely, 2^111355320545 is an apocalyptic number.

It is an amenable number.

111355320545 is a deficient number, since it is larger than the sum of its proper divisors (42268199455).

111355320545 is a wasteful number, since it uses less digits than its factorization.

111355320545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25577.

The product of its (nonzero) digits is 45000, while the sum is 35.

Adding to 111355320545 its reverse (545023553111), we get a palindrome (656378873656).

The spelling of 111355320545 in words is "one hundred eleven billion, three hundred fifty-five million, three hundred twenty thousand, five hundred forty-five".