111456549065 has 4 divisors (see below), whose sum is σ = 133747858884. Its totient is φ = 89165239248.

The previous prime is 111456549011. The next prime is 111456549107. The reversal of 111456549065 is 560945654111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46637425849 + 64819123216 = 215957^2 + 254596^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111456549065 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11145654902 + ... + 11145654911.

It is an arithmetic number, because the mean of its divisors is an integer number (33436964721).

Almost surely, 2^111456549065 is an apocalyptic number.

It is an amenable number.

111456549065 is a deficient number, since it is larger than the sum of its proper divisors (22291309819).

111456549065 is an equidigital number, since it uses as much as digits as its factorization.

111456549065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22291309818.

The product of its (nonzero) digits is 648000, while the sum is 47.

The spelling of 111456549065 in words is "one hundred eleven billion, four hundred fifty-six million, five hundred forty-nine thousand, sixty-five".