21846242945 has 8 divisors (see below), whose sum is σ = 26333051136. Its totient is φ = 17398621296.

The previous prime is 21846242933. The next prime is 21846242983. The reversal of 21846242945 is 54924264812.

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

It is a cyclic number.

It is not a de Polignac number, because 21846242945 - 2³² = 17551275649 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21846242945.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9795407 + ... + 9797636.

It is an arithmetic number, because the mean of its divisors is an integer number (3291631392).

Almost surely, 2^21846242945 is an apocalyptic number.

It is an amenable number.

21846242945 is a deficient number, since it is larger than the sum of its proper divisors (4486808191).

21846242945 is a wasteful number, since it uses less digits than its factorization.

21846242945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19593271.

The product of its digits is 1105920, while the sum is 47.

The spelling of 21846242945 in words is "twenty-one billion, eight hundred forty-six million, two hundred forty-two thousand, nine hundred forty-five".