16506125100 has 54 divisors (see below), whose sum is σ = 51737534940. Its totient is φ = 4401633120.

The previous prime is 16506125063. The next prime is 16506125107. The reversal of 16506125100 is 152160561.

It is a happy number.

16506125100 is a `hidden beast` number, since 1 + 650 + 6 + 1 + 2 + 5 + 1 + 0 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (16506125107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 9169170 + ... + 9170969.

Almost surely, 2^16506125100 is an apocalyptic number.

16506125100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16506125100 is an abundant number, since it is smaller than the sum of its proper divisors (35231409840).

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

16506125100 is a wasteful number, since it uses less digits than its factorization.

16506125100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18340159 (or 18340149 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

Adding to 16506125100 its reverse (152160561), we get a palindrome (16658285661).

It can be divided in two parts, 1650 and 6125100, that added together give a triangular number (6126750 = T₃₅₀₀).

The spelling of 16506125100 in words is "sixteen billion, five hundred six million, one hundred twenty-five thousand, one hundred".