21335151230164 has 24 divisors (see below), whose sum is σ = 40808031199488. Its totient is φ = 9716197902720.

The previous prime is 21335151230117. The next prime is 21335151230201. The reversal of 21335151230164 is 46103215153312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5060517634 + ... + 5060521849.

It is an arithmetic number, because the mean of its divisors is an integer number (1700334633312).

Almost surely, 2^{21335151230164} is an apocalyptic number.

It is an amenable number.

21335151230164 is a deficient number, since it is larger than the sum of its proper divisors (19472879969324).

21335151230164 is a wasteful number, since it uses less digits than its factorization.

21335151230164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10121039535 (or 10121039533 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

Adding to 21335151230164 its reverse (46103215153312), we get a palindrome (67438366383476).

The spelling of 21335151230164 in words is "twenty-one trillion, three hundred thirty-five billion, one hundred fifty-one million, two hundred thirty thousand, one hundred sixty-four".