6667586779392 has 864 divisors, whose sum is σ = 25945176821760. Its totient is φ = 1640643932160.

The previous prime is 6667586779333. The next prime is 6667586779409. The reversal of 6667586779392 is 2939776857666.

It is a tau number, because it is divible by the number of its divisors (864).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 192115513 + ... + 192150215.

It is an arithmetic number, because the mean of its divisors is an integer number (30029139840).

Almost surely, 2^{6667586779392} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6667586779392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12972588410880).

6667586779392 is an abundant number, since it is smaller than the sum of its proper divisors (19277590042368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6667586779392 is a wasteful number, since it uses less digits than its factorization.

6667586779392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34784 (or 34745 counting only the distinct ones).

The product of its digits is 8641624320, while the sum is 81.

The spelling of 6667586779392 in words is "six trillion, six hundred sixty-seven billion, five hundred eighty-six million, seven hundred seventy-nine thousand, three hundred ninety-two".