6221987920814 has 4 divisors (see below), whose sum is σ = 9332981881224. Its totient is φ = 3110993960406.

The previous prime is 6221987920807. The next prime is 6221987920823. The reversal of 6221987920814 is 4180297891226.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1555496980202 + ... + 1555496980205.

It is an arithmetic number, because the mean of its divisors is an integer number (2333245470306).

Almost surely, 2^{6221987920814} is an apocalyptic number.

6221987920814 is a deficient number, since it is larger than the sum of its proper divisors (3110993960410).

6221987920814 is a wasteful number, since it uses less digits than its factorization.

6221987920814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3110993960409.

The product of its (nonzero) digits is 6967296, while the sum is 59.

The spelling of 6221987920814 in words is "six trillion, two hundred twenty-one billion, nine hundred eighty-seven million, nine hundred twenty thousand, eight hundred fourteen".