16506053603 has 16 divisors (see below), whose sum is σ = 18050376960. Its totient is φ = 15001199136.

The previous prime is 16506053587. The next prime is 16506053617. The reversal of 16506053603 is 30635060561.

It is a cyclic number.

It is not a de Polignac number, because 16506053603 - 2⁴ = 16506053587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16506053693) 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, 2312426 + ... + 2319552.

It is an arithmetic number, because the mean of its divisors is an integer number (1128148560).

Almost surely, 2^16506053603 is an apocalyptic number.

16506053603 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

16506053603 is a deficient number, since it is larger than the sum of its proper divisors (1544323357).

16506053603 is a wasteful number, since it uses less digits than its factorization.

16506053603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9866.

The product of its (nonzero) digits is 48600, while the sum is 35.

The spelling of 16506053603 in words is "sixteen billion, five hundred six million, fifty-three thousand, six hundred three".