15660052100 has 108 divisors (see below), whose sum is σ = 43124271120. Its totient is φ = 4881038400.

The previous prime is 15660052081. The next prime is 15660052139. The reversal of 15660052100 is 125006651.

15660052100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 15660052100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 91370 + ... + 199169.

Almost surely, 2^15660052100 is an apocalyptic number.

15660052100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15660052100 is an abundant number, since it is smaller than the sum of its proper divisors (27464219020).

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

15660052100 is a wasteful number, since it uses less digits than its factorization.

15660052100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290578 (or 290564 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 15660052100 its reverse (125006651), we get a palindrome (15785058751).

The spelling of 15660052100 in words is "fifteen billion, six hundred sixty million, fifty-two thousand, one hundred".