6656694912000 has 704 divisors, whose sum is σ = 28117770170880. Its totient is φ = 1521524736000.

The previous prime is 6656694911983. The next prime is 6656694912037. The reversal of 6656694912000 is 2194966566.

6656694912000 is a `hidden beast` number, since 66 + 566 + 9 + 4 + 9 + 12 + 0 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 24054420 + ... + 24329580.

Almost surely, 2^{6656694912000} is an apocalyptic number.

6656694912000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6656694912000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14058885085440).

6656694912000 is an abundant number, since it is smaller than the sum of its proper divisors (21461075258880).

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

6656694912000 is a wasteful number, since it uses less digits than its factorization.

6656694912000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275212 (or 275178 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 54.

The spelling of 6656694912000 in words is "six trillion, six hundred fifty-six billion, six hundred ninety-four million, nine hundred twelve thousand".