21849114863 has 4 divisors (see below), whose sum is σ = 21850978128. Its totient is φ = 21847251600.

The previous prime is 21849114851. The next prime is 21849114877. The reversal of 21849114863 is 36841194812.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21849114863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21849114803) 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, 913931 + ... + 937532.

It is an arithmetic number, because the mean of its divisors is an integer number (5462744532).

Almost surely, 2^21849114863 is an apocalyptic number.

21849114863 is a deficient number, since it is larger than the sum of its proper divisors (1863265).

21849114863 is a wasteful number, since it uses less digits than its factorization.

21849114863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1863264.

The product of its digits is 331776, while the sum is 47.

The spelling of 21849114863 in words is "twenty-one billion, eight hundred forty-nine million, one hundred fourteen thousand, eight hundred sixty-three".