16145612861 has 32 divisors (see below), whose sum is σ = 19694368512. Its totient is φ = 12920878080.

The previous prime is 16145612761. The next prime is 16145612927. The reversal of 16145612861 is 16821654161.

It is a cyclic number.

It is not a de Polignac number, because 16145612861 - 2³⁰ = 15071871037 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16145612761) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12642755 + ... + 12644031.

It is an arithmetic number, because the mean of its divisors is an integer number (615449016).

Almost surely, 2^16145612861 is an apocalyptic number.

It is an amenable number.

16145612861 is a deficient number, since it is larger than the sum of its proper divisors (3548755651).

16145612861 is a wasteful number, since it uses less digits than its factorization.

16145612861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2069.

The product of its digits is 69120, while the sum is 41.

The spelling of 16145612861 in words is "sixteen billion, one hundred forty-five million, six hundred twelve thousand, eight hundred sixty-one".