16361640220504 has 8 divisors (see below), whose sum is σ = 30678075413460. Its totient is φ = 8180820110248.

The previous prime is 16361640220501. The next prime is 16361640220537. The reversal of 16361640220504 is 40502204616361.

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 1022602513774 + ... + 1022602513789.

Almost surely, 2^{16361640220504} is an apocalyptic number.

It is an amenable number.

16361640220504 is a deficient number, since it is larger than the sum of its proper divisors (14316435192956).

16361640220504 is a wasteful number, since it uses less digits than its factorization.

16361640220504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2045205027569 (or 2045205027565 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

Adding to 16361640220504 its reverse (40502204616361), we get a palindrome (56863844836865).

The spelling of 16361640220504 in words is "sixteen trillion, three hundred sixty-one billion, six hundred forty million, two hundred twenty thousand, five hundred four".