21150205461364 has 12 divisors (see below), whose sum is σ = 42300410922784. Its totient is φ = 9064373769144.

The previous prime is 21150205461361. The next prime is 21150205461373. The reversal of 21150205461364 is 46316450205112.

21150205461364 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21150205461361) 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, 377682240354 + ... + 377682240409.

Almost surely, 2^{21150205461364} is an apocalyptic number.

It is an amenable number.

21150205461364 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21150205461364 is a wasteful number, since it uses less digits than its factorization.

21150205461364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755364480774 (or 755364480772 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

Adding to 21150205461364 its reverse (46316450205112), we get a palindrome (67466655666476).

The spelling of 21150205461364 in words is "twenty-one trillion, one hundred fifty billion, two hundred five million, four hundred sixty-one thousand, three hundred sixty-four".