21464826800636 has 24 divisors (see below), whose sum is σ = 38016841378320. Its totient is φ = 10602877718912.

The previous prime is 21464826800623. The next prime is 21464826800723. The reversal of 21464826800636 is 63600862846412.

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 7 ways as a sum of consecutive naturals, for example, 15206120 + ... + 16557648.

It is an arithmetic number, because the mean of its divisors is an integer number (1584035057430).

Almost surely, 2^{21464826800636} is an apocalyptic number.

It is an amenable number.

21464826800636 is a deficient number, since it is larger than the sum of its proper divisors (16552014577684).

21464826800636 is a wasteful number, since it uses less digits than its factorization.

21464826800636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1399453 (or 1399451 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 56.

The spelling of 21464826800636 in words is "twenty-one trillion, four hundred sixty-four billion, eight hundred twenty-six million, eight hundred thousand, six hundred thirty-six".