16361640220503 has 8 divisors (see below), whose sum is σ = 22764021176448. Its totient is φ = 10433509705784.

The previous prime is 16361640220501. The next prime is 16361640220537. The reversal of 16361640220503 is 30502204616361.

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

It is a cyclic number.

It is not a de Polignac number, because 16361640220503 - 2¹ = 16361640220501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16361640220501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118562610225 + ... + 118562610362.

It is an arithmetic number, because the mean of its divisors is an integer number (2845502647056).

Almost surely, 2^{16361640220503} is an apocalyptic number.

16361640220503 is a deficient number, since it is larger than the sum of its proper divisors (6402380955945).

16361640220503 is a wasteful number, since it uses less digits than its factorization.

16361640220503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237125220613.

The product of its (nonzero) digits is 155520, while the sum is 39.

Adding to 16361640220503 its reverse (30502204616361), we get a palindrome (46863844836864).

The spelling of 16361640220503 in words is "sixteen trillion, three hundred sixty-one billion, six hundred forty million, two hundred twenty thousand, five hundred three".