2016138728503 has 2 divisors, whose sum is σ = 2016138728504. Its totient is φ = 2016138728502.

The previous prime is 2016138728441. The next prime is 2016138728551. The reversal of 2016138728503 is 3058278316102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2016138728503 - 2³³ = 2007548793911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2016138723503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1008069364251 + 1008069364252.

It is an arithmetic number, because the mean of its divisors is an integer number (1008069364252).

Almost surely, 2^{2016138728503} is an apocalyptic number.

2016138728503 is a deficient number, since it is larger than the sum of its proper divisors (1).

2016138728503 is an equidigital number, since it uses as much as digits as its factorization.

2016138728503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 2016138728503 in words is "two trillion, sixteen billion, one hundred thirty-eight million, seven hundred twenty-eight thousand, five hundred three".