21740245822 has 8 divisors (see below), whose sum is σ = 32611431456. Its totient is φ = 10869768672.

The previous prime is 21740245811. The next prime is 21740245861. The reversal of 21740245822 is 22854204712.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92278 + ... + 228025.

It is an arithmetic number, because the mean of its divisors is an integer number (4076428932).

Almost surely, 2^21740245822 is an apocalyptic number.

21740245822 is a deficient number, since it is larger than the sum of its proper divisors (10871185634).

21740245822 is a wasteful number, since it uses less digits than its factorization.

21740245822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354242.

The product of its (nonzero) digits is 71680, while the sum is 37.

The spelling of 21740245822 in words is "twenty-one billion, seven hundred forty million, two hundred forty-five thousand, eight hundred twenty-two".