15505056155 has 16 divisors (see below), whose sum is σ = 18692402400. Its totient is φ = 12346616832.

The previous prime is 15505056121. The next prime is 15505056167. The reversal of 15505056155 is 55165050551.

It is a happy number.

15505056155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 15505056155 - 2¹⁶ = 15504990619 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1016747 + ... + 1031883.

It is an arithmetic number, because the mean of its divisors is an integer number (1168275150).

Almost surely, 2^15505056155 is an apocalyptic number.

15505056155 is a deficient number, since it is larger than the sum of its proper divisors (3187346245).

15505056155 is a wasteful number, since it uses less digits than its factorization.

15505056155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16078.

The product of its (nonzero) digits is 93750, while the sum is 38.

The spelling of 15505056155 in words is "fifteen billion, five hundred five million, fifty-six thousand, one hundred fifty-five".