21335264262430 has 64 divisors (see below), whose sum is σ = 39762911352960. Its totient is φ = 8232533438976.

The previous prime is 21335264262419. The next prime is 21335264262443. The reversal of 21335264262430 is 3426246253312.

It is a super-2 number, since 2×21335264262430² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 2488653624 + ... + 2488662196.

It is an arithmetic number, because the mean of its divisors is an integer number (621295489890).

Almost surely, 2^{21335264262430} is an apocalyptic number.

21335264262430 is a deficient number, since it is larger than the sum of its proper divisors (18427647090530).

21335264262430 is a wasteful number, since it uses less digits than its factorization.

21335264262430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15205.

The product of its (nonzero) digits is 1244160, while the sum is 43.

The spelling of 21335264262430 in words is "twenty-one trillion, three hundred thirty-five billion, two hundred sixty-four million, two hundred sixty-two thousand, four hundred thirty".