6443202778111 has 16 divisors (see below), whose sum is σ = 7318425403296. Its totient is φ = 5620910400000.

The previous prime is 6443202778099. The next prime is 6443202778141. The reversal of 6443202778111 is 1118772023446.

It is a cyclic number.

It is not a de Polignac number, because 6443202778111 - 2⁷ = 6443202777983 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 (6443202778141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117074790 + ... + 117129811.

It is an arithmetic number, because the mean of its divisors is an integer number (457401587706).

Almost surely, 2^{6443202778111} is an apocalyptic number.

6443202778111 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

6443202778111 is a deficient number, since it is larger than the sum of its proper divisors (875222625185).

6443202778111 is a wasteful number, since it uses less digits than its factorization.

6443202778111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234204714.

The product of its (nonzero) digits is 451584, while the sum is 46.

The spelling of 6443202778111 in words is "six trillion, four hundred forty-three billion, two hundred two million, seven hundred seventy-eight thousand, one hundred eleven".