21160450364 has 6 divisors (see below), whose sum is σ = 37030788144. Its totient is φ = 10580225180.

The previous prime is 21160450351. The next prime is 21160450379. The reversal of 21160450364 is 46305406112.

It is a self number, because there is not a number n which added to its sum of digits gives 21160450364.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2645056292 + ... + 2645056299.

It is an arithmetic number, because the mean of its divisors is an integer number (6171798024).

Almost surely, 2^21160450364 is an apocalyptic number.

It is an amenable number.

21160450364 is a deficient number, since it is larger than the sum of its proper divisors (15870337780).

21160450364 is a wasteful number, since it uses less digits than its factorization.

21160450364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5290112595 (or 5290112593 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 21160450364 its reverse (46305406112), we get a palindrome (67465856476).

The spelling of 21160450364 in words is "twenty-one billion, one hundred sixty million, four hundred fifty thousand, three hundred sixty-four".