6220544656399 has 4 divisors (see below), whose sum is σ = 6226267329664. Its totient is φ = 6214821983136.

The previous prime is 6220544656397. The next prime is 6220544656409. The reversal of 6220544656399 is 9936564450226.

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 6220544656399 - 2¹ = 6220544656397 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 (6220544656397) 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, 2861335002 + ... + 2861337175.

It is an arithmetic number, because the mean of its divisors is an integer number (1556566832416).

Almost surely, 2^{6220544656399} is an apocalyptic number.

6220544656399 is a deficient number, since it is larger than the sum of its proper divisors (5722673265).

6220544656399 is a wasteful number, since it uses less digits than its factorization.

6220544656399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5722673264.

The product of its (nonzero) digits is 83980800, while the sum is 61.

The spelling of 6220544656399 in words is "six trillion, two hundred twenty billion, five hundred forty-four million, six hundred fifty-six thousand, three hundred ninety-nine".