21994186868483 has 4 divisors (see below), whose sum is σ = 22003286658600. Its totient is φ = 21985087078368.

The previous prime is 21994186868477. The next prime is 21994186868491. The reversal of 21994186868483 is 38486868149912.

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

It is a cyclic number.

It is not a de Polignac number, because 21994186868483 - 2²² = 21994182674179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21994186864483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4549891433 + ... + 4549896266.

It is an arithmetic number, because the mean of its divisors is an integer number (5500821664650).

Almost surely, 2^{21994186868483} is an apocalyptic number.

21994186868483 is a deficient number, since it is larger than the sum of its proper divisors (9099790117).

21994186868483 is an equidigital number, since it uses as much as digits as its factorization.

21994186868483 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9099790116.

The product of its digits is 1146617856, while the sum is 77.

The spelling of 21994186868483 in words is "twenty-one trillion, nine hundred ninety-four billion, one hundred eighty-six million, eight hundred sixty-eight thousand, four hundred eighty-three".