15000055566 has 8 divisors (see below), whose sum is σ = 30000111144. Its totient is φ = 5000018520.

The previous prime is 15000055541. The next prime is 15000055573. The reversal of 15000055566 is 66555000051.

It is a sphenic number, since it is the product of 3 distinct primes.

15000055566 is an admirable number.

It is a congruent number.

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, 1250004625 + ... + 1250004636.

It is an arithmetic number, because the mean of its divisors is an integer number (3750013893).

Almost surely, 2^15000055566 is an apocalyptic number.

15000055566 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

15000055566 is a wasteful number, since it uses less digits than its factorization.

15000055566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2500009266.

The product of its (nonzero) digits is 22500, while the sum is 33.

The spelling of 15000055566 in words is "fifteen billion, fifty-five thousand, five hundred sixty-six".