5311664161 has 4 divisors (see below), whose sum is σ = 5624115012. Its totient is φ = 4999213312.

The previous prime is 5311664143. The next prime is 5311664173. The reversal of 5311664161 is 1614661135.

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 2638774161 + 2672890000 = 51369^2 + 51700^2 .

It is a cyclic number.

It is not a de Polignac number, because 5311664161 - 2²¹ = 5309567009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5311664131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156225400 + ... + 156225433.

It is an arithmetic number, because the mean of its divisors is an integer number (1406028753).

Almost surely, 2^5311664161 is an apocalyptic number.

It is an amenable number.

5311664161 is a deficient number, since it is larger than the sum of its proper divisors (312450851).

5311664161 is a wasteful number, since it uses less digits than its factorization.

5311664161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312450850.

The product of its digits is 12960, while the sum is 34.

The square root of 5311664161 is about 72881.1646517809. The cubic root of 5311664161 is about 1744.7914968870.

The spelling of 5311664161 in words is "five billion, three hundred eleven million, six hundred sixty-four thousand, one hundred sixty-one".