15566545252 has 12 divisors (see below), whose sum is σ = 27267883776. Its totient is φ = 7775721320.

The previous prime is 15566545249. The next prime is 15566545301. The reversal of 15566545252 is 25254566551.

It is an unprimeable number.

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, 1883188 + ... + 1891435.

It is an arithmetic number, because the mean of its divisors is an integer number (2272323648).

Almost surely, 2^15566545252 is an apocalyptic number.

It is an amenable number.

15566545252 is a deficient number, since it is larger than the sum of its proper divisors (11701338524).

15566545252 is a wasteful number, since it uses less digits than its factorization.

15566545252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3775658 (or 3775656 counting only the distinct ones).

The product of its digits is 1800000, while the sum is 46.

The spelling of 15566545252 in words is "fifteen billion, five hundred sixty-six million, five hundred forty-five thousand, two hundred fifty-two".