16115571534900 has 144 divisors (see below), whose sum is σ = 47118684711168. Its totient is φ = 4252362240000.

The previous prime is 16115571534863. The next prime is 16115571534901. The reversal of 16115571534900 is 943517551161.

It is a self number, because there is not a number n which added to its sum of digits gives 16115571534900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16115571534901) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19978405 + ... + 20769395.

It is an arithmetic number, because the mean of its divisors is an integer number (327213088272).

Almost surely, 2^{16115571534900} is an apocalyptic number.

16115571534900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16115571534900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23559342355584).

16115571534900 is an abundant number, since it is smaller than the sum of its proper divisors (31003113176268).

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

16115571534900 is a wasteful number, since it uses less digits than its factorization.

16115571534900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791722 (or 791715 counting only the distinct ones).

The product of its (nonzero) digits is 567000, while the sum is 48.

The spelling of 16115571534900 in words is "sixteen trillion, one hundred fifteen billion, five hundred seventy-one million, five hundred thirty-four thousand, nine hundred".