5406111665 has 4 divisors (see below), whose sum is σ = 6487334004. Its totient is φ = 4324889328.

The previous prime is 5406111617. The next prime is 5406111677. The reversal of 5406111665 is 5661116045.

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 3183554929 + 2222556736 = 56423^2 + 47144^2 .

It is a cyclic number.

It is not a de Polignac number, because 5406111665 - 2¹⁴ = 5406095281 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 540611162 + ... + 540611171.

It is an arithmetic number, because the mean of its divisors is an integer number (1621833501).

Almost surely, 2^5406111665 is an apocalyptic number.

It is an amenable number.

5406111665 is a deficient number, since it is larger than the sum of its proper divisors (1081222339).

5406111665 is a wasteful number, since it uses less digits than its factorization.

5406111665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081222338.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 5406111665 is about 73526.2651370243. The cubic root of 5406111665 is about 1755.0722680825.

The spelling of 5406111665 in words is "five billion, four hundred six million, one hundred eleven thousand, six hundred sixty-five".