21160351500067 has 4 divisors (see below), whose sum is σ = 22788070846240. Its totient is φ = 19532632153896.

The previous prime is 21160351500023. The next prime is 21160351500121. The reversal of 21160351500067 is 76000515306112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21160351500067 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21160351499999 and 21160351500035.

It is not an unprimeable number, because it can be changed into a prime (21160351500767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 813859673067 + ... + 813859673092.

It is an arithmetic number, because the mean of its divisors is an integer number (5697017711560).

Almost surely, 2^{21160351500067} is an apocalyptic number.

21160351500067 is a deficient number, since it is larger than the sum of its proper divisors (1627719346173).

21160351500067 is a wasteful number, since it uses less digits than its factorization.

21160351500067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1627719346172.

The product of its (nonzero) digits is 37800, while the sum is 37.

Adding to 21160351500067 its reverse (76000515306112), we get a palindrome (97160866806179).

The spelling of 21160351500067 in words is "twenty-one trillion, one hundred sixty billion, three hundred fifty-one million, five hundred thousand, sixty-seven".