6520261448 has 8 divisors (see below), whose sum is σ = 12225490230. Its totient is φ = 3260130720.

The previous prime is 6520261439. The next prime is 6520261463. The reversal of 6520261448 is 8441620256.

It can be written as a sum of positive squares in only one way, i.e., 5975599204 + 544662244 = 77302^2 + 23338^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407516333 + ... + 407516348.

Almost surely, 2^6520261448 is an apocalyptic number.

It is an amenable number.

6520261448 is a deficient number, since it is larger than the sum of its proper divisors (5705228782).

6520261448 is a wasteful number, since it uses less digits than its factorization.

6520261448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815032687 (or 815032683 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 6520261448 is about 80748.1358794121. The cubic root of 6520261448 is about 1868.1926973147.

The spelling of 6520261448 in words is "six billion, five hundred twenty million, two hundred sixty-one thousand, four hundred forty-eight".