6578999281936 has 15 divisors (see below), whose sum is σ = 12746830987191. Its totient is φ = 3289494511056.

The previous prime is 6578999281909. The next prime is 6578999281991. The reversal of 6578999281936 is 6391829998756.

The square root of 6578999281936 is 2564956.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6578999281936.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 9939205 + ... + 10580443.

Almost surely, 2^{6578999281936} is an apocalyptic number.

6578999281936 is the 2564956-th square number.

It is an amenable number.

6578999281936 is a deficient number, since it is larger than the sum of its proper divisors (6167831705255).

6578999281936 is an frugal number, since it uses more digits than its factorization.

6578999281936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282486 (or 641241 counting only the distinct ones).

The product of its digits is 3174474240, while the sum is 82.

The spelling of 6578999281936 in words is "six trillion, five hundred seventy-eight billion, nine hundred ninety-nine million, two hundred eighty-one thousand, nine hundred thirty-six".