15533645516 has 12 divisors (see below), whose sum is σ = 28365787632. Its totient is φ = 7429134768.

The previous prime is 15533645513. The next prime is 15533645531. The reversal of 15533645516 is 61554633551.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (15533645513) 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 3 ways as a sum of consecutive naturals, for example, 84421895 + ... + 84422078.

It is an arithmetic number, because the mean of its divisors is an integer number (2363815636).

Almost surely, 2^15533645516 is an apocalyptic number.

It is an amenable number.

15533645516 is a deficient number, since it is larger than the sum of its proper divisors (12832142116).

15533645516 is a wasteful number, since it uses less digits than its factorization.

15533645516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168844000 (or 168843998 counting only the distinct ones).

The product of its digits is 810000, while the sum is 44.

The spelling of 15533645516 in words is "fifteen billion, five hundred thirty-three million, six hundred forty-five thousand, five hundred sixteen".