15556055506 has 8 divisors (see below), whose sum is σ = 23335481484. Its totient is φ = 7777561680.

The previous prime is 15556055477. The next prime is 15556055551. The reversal of 15556055506 is 60555065551.

It can be written as a sum of positive squares in 2 ways, for example, as 15384681225 + 171374281 = 124035^2 + 13091^2 .

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

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, 189705 + ... + 259036.

Almost surely, 2^15556055506 is an apocalyptic number.

15556055506 is a deficient number, since it is larger than the sum of its proper divisors (7779425978).

15556055506 is a wasteful number, since it uses less digits than its factorization.

15556055506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466076.

The product of its (nonzero) digits is 562500, while the sum is 43.

The spelling of 15556055506 in words is "fifteen billion, five hundred fifty-six million, fifty-five thousand, five hundred six".