6476771840 has 480 divisors, whose sum is σ = 20376195840. Its totient is φ = 1930199040.

The previous prime is 6476771839. The next prime is 6476771881. The reversal of 6476771840 is 481776746.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62881229 + ... + 62881331.

It is an arithmetic number, because the mean of its divisors is an integer number (42450408).

Almost surely, 2^6476771840 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 6476771840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10188097920).

6476771840 is an abundant number, since it is smaller than the sum of its proper divisors (13899424000).

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

6476771840 is a wasteful number, since it uses less digits than its factorization.

6476771840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 1580544, while the sum is 50.

The square root of 6476771840 is about 80478.3936221394. The cubic root of 6476771840 is about 1864.0298643806.

The spelling of 6476771840 in words is "six billion, four hundred seventy-six million, seven hundred seventy-one thousand, eight hundred forty".