21365031351376 has 20 divisors (see below), whose sum is σ = 41481167356800. Its totient is φ = 10660213968992.

The previous prime is 21365031351353. The next prime is 21365031351427. The reversal of 21365031351376 is 67315313056312.

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 3 ways as a sum of consecutive naturals, for example, 1393848766 + ... + 1393864093.

It is an arithmetic number, because the mean of its divisors is an integer number (2074058367840).

Almost surely, 2^{21365031351376} is an apocalyptic number.

It is an amenable number.

21365031351376 is a deficient number, since it is larger than the sum of its proper divisors (20116136005424).

21365031351376 is a wasteful number, since it uses less digits than its factorization.

21365031351376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2787713346 (or 2787713340 counting only the distinct ones).

The product of its (nonzero) digits is 1020600, while the sum is 46.

The spelling of 21365031351376 in words is "twenty-one trillion, three hundred sixty-five billion, thirty-one million, three hundred fifty-one thousand, three hundred seventy-six".