16278972800 has 48 divisors (see below), whose sum is σ = 40214157900. Its totient is φ = 6511587840.

The previous prime is 16278972767. The next prime is 16278972811. The reversal of 16278972800 is 827987261.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2540390 + ... + 2546789.

Almost surely, 2^16278972800 is an apocalyptic number.

16278972800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16278972800 is an abundant number, since it is smaller than the sum of its proper divisors (23935185100).

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

16278972800 is an equidigital number, since it uses as much as digits as its factorization.

16278972800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5087203 (or 5087186 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 50.

The spelling of 16278972800 in words is "sixteen billion, two hundred seventy-eight million, nine hundred seventy-two thousand, eight hundred".