111080390728 has 8 divisors (see below), whose sum is σ = 208275732630. Its totient is φ = 55540195360.

The previous prime is 111080390723. The next prime is 111080390747. The reversal of 111080390728 is 827093080111.

It can be written as a sum of positive squares in only one way, i.e., 69422764324 + 41657626404 = 263482^2 + 204102^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (111080390723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6942524413 + ... + 6942524428.

Almost surely, 2^111080390728 is an apocalyptic number.

It is an amenable number.

111080390728 is a deficient number, since it is larger than the sum of its proper divisors (97195341902).

111080390728 is a wasteful number, since it uses less digits than its factorization.

111080390728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13885048847 (or 13885048843 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 40.

The spelling of 111080390728 in words is "one hundred eleven billion, eighty million, three hundred ninety thousand, seven hundred twenty-eight".