2155006816603 has 16 divisors (see below), whose sum is σ = 2289201243264. Its totient is φ = 2021639173120.

The previous prime is 2155006816601. The next prime is 2155006816631. The reversal of 2155006816603 is 3066186005512.

It is not a de Polignac number, because 2155006816603 - 2¹ = 2155006816601 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2155006816603.

It is not an unprimeable number, because it can be changed into a prime (2155006816601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93331326 + ... + 93354412.

It is an arithmetic number, because the mean of its divisors is an integer number (143075077704).

Almost surely, 2^{2155006816603} is an apocalyptic number.

2155006816603 is a deficient number, since it is larger than the sum of its proper divisors (134194426661).

2155006816603 is a wasteful number, since it uses less digits than its factorization.

2155006816603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40742.

The product of its (nonzero) digits is 259200, while the sum is 43.

The spelling of 2155006816603 in words is "two trillion, one hundred fifty-five billion, six million, eight hundred sixteen thousand, six hundred three".