1105435651609 has 3 divisors (see below), whose sum is σ = 1105436703007. Its totient is φ = 1105434600212.

The previous prime is 1105435651597. The next prime is 1105435651613. The reversal of 1105435651609 is 9061565345011.

The square root of 1105435651609 is 1051397.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 455199849225 + 650235802384 = 674685^2 + 806372^2 .

It is not a de Polignac number, because 1105435651609 - 2²⁷ = 1105301433881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1105435651009) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 525699 + ... + 1577095.

Almost surely, 2^{1105435651609} is an apocalyptic number.

1105435651609 is the 1051397-th square number.

1105435651609 is the 525699-th centered octagonal number.

It is an amenable number.

1105435651609 is a deficient number, since it is larger than the sum of its proper divisors (1051398).

1105435651609 is an frugal number, since it uses more digits than its factorization.

1105435651609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2102794 (or 1051397 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 46.

The spelling of 1105435651609 in words is "one trillion, one hundred five billion, four hundred thirty-five million, six hundred fifty-one thousand, six hundred nine".