6650645877792 has 480 divisors, whose sum is σ = 23928950707200. Its totient is φ = 1769657974272.

The previous prime is 6650645877779. The next prime is 6650645877797. The reversal of 6650645877792 is 2977785460566.

6650645877792 is a `hidden beast` number, since 6 + 6 + 506 + 45 + 8 + 7 + 7 + 79 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 6650645877792.

It is not an unprimeable number, because it can be changed into a prime (6650645877797) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 20175933 + ... + 20502915.

It is an arithmetic number, because the mean of its divisors is an integer number (49851980640).

Almost surely, 2^{6650645877792} 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 6650645877792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11964475353600).

6650645877792 is an abundant number, since it is smaller than the sum of its proper divisors (17278304829408).

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

6650645877792 is a wasteful number, since it uses less digits than its factorization.

6650645877792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327090 (or 327073 counting only the distinct ones).

The product of its (nonzero) digits is 1066867200, while the sum is 72.

The spelling of 6650645877792 in words is "six trillion, six hundred fifty billion, six hundred forty-five million, eight hundred seventy-seven thousand, seven hundred ninety-two".