201616205503 has 4 divisors (see below), whose sum is σ = 212227584760. Its totient is φ = 191004826248.

The previous prime is 201616205501. The next prime is 201616205513. The reversal of 201616205503 is 305502616102.

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

It is not a de Polignac number, because 201616205503 - 2¹ = 201616205501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201616205501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5305689600 + ... + 5305689637.

It is an arithmetic number, because the mean of its divisors is an integer number (53056896190).

Almost surely, 2^201616205503 is an apocalyptic number.

201616205503 is a deficient number, since it is larger than the sum of its proper divisors (10611379257).

201616205503 is a wasteful number, since it uses less digits than its factorization.

201616205503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10611379256.

The product of its (nonzero) digits is 10800, while the sum is 31.

The spelling of 201616205503 in words is "two hundred one billion, six hundred sixteen million, two hundred five thousand, five hundred three".