111659804545 has 8 divisors (see below), whose sum is σ = 136519912296. Its totient is φ = 87642412416.

The previous prime is 111659804533. The next prime is 111659804573. The reversal of 111659804545 is 545408956111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 55876922689 + 55782881856 = 236383^2 + 236184^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111659804545 - 2¹⁷ = 111659673473 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210678612 + ... + 210679141.

It is an arithmetic number, because the mean of its divisors is an integer number (17064989037).

Almost surely, 2^111659804545 is an apocalyptic number.

It is an amenable number.

111659804545 is a deficient number, since it is larger than the sum of its proper divisors (24860107751).

111659804545 is an equidigital number, since it uses as much as digits as its factorization.

111659804545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421357811.

The product of its (nonzero) digits is 864000, while the sum is 49.

The spelling of 111659804545 in words is "one hundred eleven billion, six hundred fifty-nine million, eight hundred four thousand, five hundred forty-five".