15051561066 has 12 divisors (see below), whose sum is σ = 32611715682. Its totient is φ = 5017187016.

The previous prime is 15051561061. The next prime is 15051561067. The reversal of 15051561066 is 66016515051.

It can be written as a sum of positive squares in only one way, i.e., 14876924841 + 174636225 = 121971^2 + 13215^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 15051561066.

It is not an unprimeable number, because it can be changed into a prime (15051561061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 418098901 + ... + 418098936.

Almost surely, 2^15051561066 is an apocalyptic number.

15051561066 is an abundant number, since it is smaller than the sum of its proper divisors (17560154616).

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

15051561066 is a wasteful number, since it uses less digits than its factorization.

15051561066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836197845 (or 836197842 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The spelling of 15051561066 in words is "fifteen billion, fifty-one million, five hundred sixty-one thousand, sixty-six".