6522764778672 has 160 divisors (see below), whose sum is σ = 17144982650880. Its totient is φ = 2136529824000.

The previous prime is 6522764778653. The next prime is 6522764778689. The reversal of 6522764778672 is 2768774672256.

It is a junction number, because it is equal to n+sod(n) for n = 6522764778597 and 6522764778606.

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, 2157710953 + ... + 2157713975.

It is an arithmetic number, because the mean of its divisors is an integer number (107156141568).

Almost surely, 2^{6522764778672} 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 6522764778672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8572491325440).

6522764778672 is an abundant number, since it is smaller than the sum of its proper divisors (10622217872208).

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

6522764778672 is a wasteful number, since it uses less digits than its factorization.

6522764778672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5631 (or 5625 counting only the distinct ones).

The product of its digits is 663828480, while the sum is 69.

The spelling of 6522764778672 in words is "six trillion, five hundred twenty-two billion, seven hundred sixty-four million, seven hundred seventy-eight thousand, six hundred seventy-two".