16205978260 has 24 divisors (see below), whose sum is σ = 34103623680. Its totient is φ = 6468854304.

The previous prime is 16205978249. The next prime is 16205978309. The reversal of 16205978260 is 6287950261.

It is a self number, because there is not a number n which added to its sum of digits gives 16205978260.

It is a congruent number.

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, 836244 + ... + 855403.

It is an arithmetic number, because the mean of its divisors is an integer number (1420984320).

Almost surely, 2^16205978260 is an apocalyptic number.

16205978260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16205978260 is an abundant number, since it is smaller than the sum of its proper divisors (17897645420).

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

16205978260 is a wasteful number, since it uses less digits than its factorization.

16205978260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1692135 (or 1692133 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 16205978260 in words is "sixteen billion, two hundred five million, nine hundred seventy-eight thousand, two hundred sixty".