21370033765246 has 8 divisors (see below), whose sum is σ = 32055070270320. Its totient is φ = 10685010341808.

The previous prime is 21370033765243. The next prime is 21370033765253. The reversal of 21370033765246 is 64256733007312.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21370033765246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21370033765243) 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, 4648810 + ... + 8021938.

It is an arithmetic number, because the mean of its divisors is an integer number (4006883783790).

Almost surely, 2^{21370033765246} is an apocalyptic number.

21370033765246 is a deficient number, since it is larger than the sum of its proper divisors (10685036505074).

21370033765246 is a wasteful number, since it uses less digits than its factorization.

21370033765246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6540818.

The product of its (nonzero) digits is 3810240, while the sum is 49.

The spelling of 21370033765246 in words is "twenty-one trillion, three hundred seventy billion, thirty-three million, seven hundred sixty-five thousand, two hundred forty-six".