16091601800 has 24 divisors (see below), whose sum is σ = 37412974650. Its totient is φ = 6436640640.

The previous prime is 16091601761. The next prime is 16091601833. The reversal of 16091601800 is 810619061.

It can be written as a sum of positive squares in 3 ways, for example, as 7998440356 + 8093161444 = 89434^2 + 89962^2 .

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, 40228805 + ... + 40229204.

Almost surely, 2^16091601800 is an apocalyptic number.

16091601800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16091601800 is an abundant number, since it is smaller than the sum of its proper divisors (21321372850).

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

16091601800 is a wasteful number, since it uses less digits than its factorization.

16091601800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80458025 (or 80458016 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 32.

The spelling of 16091601800 in words is "sixteen billion, ninety-one million, six hundred one thousand, eight hundred".