6555078683999 has 4 divisors (see below), whose sum is σ = 6556712148936. Its totient is φ = 6553445219064.

The previous prime is 6555078683927. The next prime is 6555078684019. The reversal of 6555078683999 is 9993868705556.

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 6555078683999 - 2¹⁶ = 6555078618463 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 (6555078683099) 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, 816726449 + ... + 816734474.

It is an arithmetic number, because the mean of its divisors is an integer number (1639178037234).

Almost surely, 2^{6555078683999} is an apocalyptic number.

6555078683999 is a deficient number, since it is larger than the sum of its proper divisors (1633464937).

6555078683999 is a wasteful number, since it uses less digits than its factorization.

6555078683999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633464936.

The product of its (nonzero) digits is 4408992000, while the sum is 80.

The spelling of 6555078683999 in words is "six trillion, five hundred fifty-five billion, seventy-eight million, six hundred eighty-three thousand, nine hundred ninety-nine".