21369393932576 has 48 divisors (see below), whose sum is σ = 42095976951168. Its totient is φ = 10678354156800.

The previous prime is 21369393932569. The next prime is 21369393932587. The reversal of 21369393932576 is 67523939396312.

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, 387007946 + ... + 387063158.

It is an arithmetic number, because the mean of its divisors is an integer number (876999519816).

Almost surely, 2^{21369393932576} is an apocalyptic number.

It is an amenable number.

21369393932576 is a deficient number, since it is larger than the sum of its proper divisors (20726583018592).

21369393932576 is a wasteful number, since it uses less digits than its factorization.

21369393932576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62185 (or 62177 counting only the distinct ones).

The product of its digits is 297606960, while the sum is 68.

The spelling of 21369393932576 in words is "twenty-one trillion, three hundred sixty-nine billion, three hundred ninety-three million, nine hundred thirty-two thousand, five hundred seventy-six".