15500161206 has 24 divisors (see below), whose sum is σ = 33909741840. Its totient is φ = 5116557456.

The previous prime is 15500161199. The next prime is 15500161207. The reversal of 15500161206 is 60216100551.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 15500161206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15500161207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4178341 + ... + 4182048.

It is an arithmetic number, because the mean of its divisors is an integer number (1412905910).

Almost surely, 2^15500161206 is an apocalyptic number.

15500161206 is an abundant number, since it is smaller than the sum of its proper divisors (18409580634).

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

15500161206 is a wasteful number, since it uses less digits than its factorization.

15500161206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8360500 (or 8360497 counting only the distinct ones).

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

Adding to 15500161206 its reverse (60216100551), we get a palindrome (75716261757).

The spelling of 15500161206 in words is "fifteen billion, five hundred million, one hundred sixty-one thousand, two hundred six".