21373282366 has 8 divisors (see below), whose sum is σ = 32511471984. Its totient is φ = 10536125040.

The previous prime is 21373282339. The next prime is 21373282369. The reversal of 21373282366 is 66328237312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21373282369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75257895 + ... + 75258178.

It is an arithmetic number, because the mean of its divisors is an integer number (4063933998).

Almost surely, 2^21373282366 is an apocalyptic number.

21373282366 is a deficient number, since it is larger than the sum of its proper divisors (11138189618).

21373282366 is a wasteful number, since it uses less digits than its factorization.

21373282366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150516146.

The product of its digits is 435456, while the sum is 43.

The spelling of 21373282366 in words is "twenty-one billion, three hundred seventy-three million, two hundred eighty-two thousand, three hundred sixty-six".