21374335643350 has 12 divisors (see below), whose sum is σ = 39756264296724. Its totient is φ = 8549734257320.

The previous prime is 21374335643303. The next prime is 21374335643383. The reversal of 21374335643350 is 5334653347312.

It is a junction number, because it is equal to n+sod(n) for n = 21374335643294 and 21374335643303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 213743356384 + ... + 213743356483.

It is an arithmetic number, because the mean of its divisors is an integer number (3313022024727).

Almost surely, 2^{21374335643350} is an apocalyptic number.

21374335643350 is a deficient number, since it is larger than the sum of its proper divisors (18381928653374).

21374335643350 is a wasteful number, since it uses less digits than its factorization.

21374335643350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427486712879 (or 427486712874 counting only the distinct ones).

The product of its (nonzero) digits is 8164800, while the sum is 49.

The spelling of 21374335643350 in words is "twenty-one trillion, three hundred seventy-four billion, three hundred thirty-five million, six hundred forty-three thousand, three hundred fifty".