6611135776640 has 256 divisors, whose sum is σ = 16966413576000. Its totient is φ = 2455692115968.

The previous prime is 6611135776607. The next prime is 6611135776681. The reversal of 6611135776640 is 466775311166.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 784327946 + ... + 784336374.

Almost surely, 2^{6611135776640} 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 6611135776640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8483206788000).

6611135776640 is an abundant number, since it is smaller than the sum of its proper divisors (10355277799360).

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

6611135776640 is a wasteful number, since it uses less digits than its factorization.

6611135776640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9737 (or 9725 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 53.

The spelling of 6611135776640 in words is "six trillion, six hundred eleven billion, one hundred thirty-five million, seven hundred seventy-six thousand, six hundred forty".