15503943055 has 8 divisors (see below), whose sum is σ = 18605714544. Its totient is φ = 12402499200.

The previous prime is 15503943047. The next prime is 15503943127. The reversal of 15503943055 is 55034930551.

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

It is not a de Polignac number, because 15503943055 - 2³ = 15503943047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15503942999 and 15503943017.

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 7 ways as a sum of consecutive naturals, for example, 38220 + ... + 180190.

It is an arithmetic number, because the mean of its divisors is an integer number (2325714318).

Almost surely, 2^15503943055 is an apocalyptic number.

15503943055 is a deficient number, since it is larger than the sum of its proper divisors (3101771489).

15503943055 is a wasteful number, since it uses less digits than its factorization.

15503943055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163817.

The product of its (nonzero) digits is 202500, while the sum is 40.

The spelling of 15503943055 in words is "fifteen billion, five hundred three million, nine hundred forty-three thousand, fifty-five".