3161645164871 has 4 divisors (see below), whose sum is σ = 3191193250632. Its totient is φ = 3132097079112.

The previous prime is 3161645164861. The next prime is 3161645164891. The reversal of 3161645164871 is 1784615461613.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 3161645164871 - 2¹⁰ = 3161645163847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3161645164861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14774042720 + ... + 14774042933.

It is an arithmetic number, because the mean of its divisors is an integer number (797798312658).

Almost surely, 2^{3161645164871} is an apocalyptic number.

3161645164871 is a deficient number, since it is larger than the sum of its proper divisors (29548085761).

3161645164871 is a wasteful number, since it uses less digits than its factorization.

3161645164871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29548085760.

The product of its digits is 2903040, while the sum is 53.

The spelling of 3161645164871 in words is "three trillion, one hundred sixty-one billion, six hundred forty-five million, one hundred sixty-four thousand, eight hundred seventy-one".