6522648781 has 16 divisors (see below), whose sum is σ = 7195827456. Its totient is φ = 5863000000.

The previous prime is 6522648773. The next prime is 6522648787. The reversal of 6522648781 is 1878462256.

It is not a de Polignac number, because 6522648781 - 2³ = 6522648773 is a prime.

It is a super-2 number, since 2×6522648781² = 85089894240561571922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6522648787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 908556 + ... + 915706.

It is an arithmetic number, because the mean of its divisors is an integer number (449739216).

Almost surely, 2^6522648781 is an apocalyptic number.

It is an amenable number.

6522648781 is a deficient number, since it is larger than the sum of its proper divisors (673178675).

6522648781 is a wasteful number, since it uses less digits than its factorization.

6522648781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8084.

The product of its digits is 1290240, while the sum is 49.

The square root of 6522648781 is about 80762.9171154683. The cubic root of 6522648781 is about 1868.4206766114.

The spelling of 6522648781 in words is "six billion, five hundred twenty-two million, six hundred forty-eight thousand, seven hundred eighty-one".