15500065055 has 4 divisors (see below), whose sum is σ = 18600078072. Its totient is φ = 12400052040.

The previous prime is 15500065013. The next prime is 15500065067. The reversal of 15500065055 is 55056000551.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 15500065055 - 2⁶ = 15500064991 is a prime.

It is a Duffinian 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, 1550006501 + ... + 1550006510.

It is an arithmetic number, because the mean of its divisors is an integer number (4650019518).

Almost surely, 2^15500065055 is an apocalyptic number.

15500065055 is a deficient number, since it is larger than the sum of its proper divisors (3100013017).

15500065055 is an equidigital number, since it uses as much as digits as its factorization.

15500065055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3100013016.

The product of its (nonzero) digits is 18750, while the sum is 32.

The spelling of 15500065055 in words is "fifteen billion, five hundred million, sixty-five thousand, fifty-five".