16205124818 has 8 divisors (see below), whose sum is σ = 24308876748. Its totient is φ = 8102165904.

The previous prime is 16205124799. The next prime is 16205124851. The reversal of 16205124818 is 81842150261.

It can be written as a sum of positive squares in 2 ways, for example, as 14154574729 + 2050550089 = 118973^2 + 45283^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144221 + ... + 230672.

Almost surely, 2^16205124818 is an apocalyptic number.

16205124818 is a deficient number, since it is larger than the sum of its proper divisors (8103751930).

16205124818 is a wasteful number, since it uses less digits than its factorization.

16205124818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396508.

The product of its (nonzero) digits is 30720, while the sum is 38.

The spelling of 16205124818 in words is "sixteen billion, two hundred five million, one hundred twenty-four thousand, eight hundred eighteen".