16287640818 has 16 divisors (see below), whose sum is σ = 32594819520. Its totient is φ = 5425957296.

The previous prime is 16287640763. The next prime is 16287640841. The reversal of 16287640818 is 81804678261.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 803230 + ... + 823257.

It is an arithmetic number, because the mean of its divisors is an integer number (2037176220).

Almost surely, 2^16287640818 is an apocalyptic number.

16287640818 is an abundant number, since it is smaller than the sum of its proper divisors (16307178702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16287640818 is a wasteful number, since it uses less digits than its factorization.

16287640818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1628161.

The product of its (nonzero) digits is 1032192, while the sum is 51.

The spelling of 16287640818 in words is "sixteen billion, two hundred eighty-seven million, six hundred forty thousand, eight hundred eighteen".