21041265613364 has 12 divisors (see below), whose sum is σ = 37605666202944. Its totient is φ = 10296789555384.

The previous prime is 21041265613261. The next prime is 21041265613387. The reversal of 21041265613364 is 46331656214012.

It is a super-2 number, since 2×21041265613364² (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 (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55960812614 + ... + 55960812989.

It is an arithmetic number, because the mean of its divisors is an integer number (3133805516912).

Almost surely, 2^{21041265613364} is an apocalyptic number.

It is an amenable number.

21041265613364 is a deficient number, since it is larger than the sum of its proper divisors (16564400589580).

21041265613364 is a wasteful number, since it uses less digits than its factorization.

21041265613364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111921625654 (or 111921625652 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 21041265613364 in words is "twenty-one trillion, forty-one billion, two hundred sixty-five million, six hundred thirteen thousand, three hundred sixty-four".