15505656115 has 4 divisors (see below), whose sum is σ = 18606787344. Its totient is φ = 12404524888.

The previous prime is 15505656037. The next prime is 15505656121. The reversal of 15505656115 is 51165650551.

15505656115 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51165650551 = 16097 ⋅3178583.

It is a cyclic number.

It is not a de Polignac number, because 15505656115 - 2³³ = 6915721523 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 1550565607 + ... + 1550565616.

It is an arithmetic number, because the mean of its divisors is an integer number (4651696836).

Almost surely, 2^15505656115 is an apocalyptic number.

15505656115 is a deficient number, since it is larger than the sum of its proper divisors (3101131229).

15505656115 is an equidigital number, since it uses as much as digits as its factorization.

15505656115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3101131228.

The product of its (nonzero) digits is 112500, while the sum is 40.

The spelling of 15505656115 in words is "fifteen billion, five hundred five million, six hundred fifty-six thousand, one hundred fifteen".