6377646616 has 128 divisors (see below), whose sum is σ = 13818470400. Its totient is φ = 2733120000.

The previous prime is 6377646581. The next prime is 6377646617. The reversal of 6377646616 is 6166467736.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6377646617) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21766566 + ... + 21766858.

It is an arithmetic number, because the mean of its divisors is an integer number (107956800).

Almost surely, 2^6377646616 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 6377646616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6909235200).

6377646616 is an abundant number, since it is smaller than the sum of its proper divisors (7440823784).

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

6377646616 is a wasteful number, since it uses less digits than its factorization.

6377646616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521 (or 517 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 52.

The square root of 6377646616 is about 79860.1691458264. The cubic root of 6377646616 is about 1854.4714449378.

The spelling of 6377646616 in words is "six billion, three hundred seventy-seven million, six hundred forty-six thousand, six hundred sixteen".