6581122522 has 8 divisors (see below), whose sum is σ = 10631044116. Its totient is φ = 3037441152.

The previous prime is 6581122507. The next prime is 6581122589. The reversal of 6581122522 is 2252211856.

It can be written as a sum of positive squares in 2 ways, for example, as 6457890321 + 123232201 = 80361^2 + 11101^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×6581122522² = 86622347299151280968, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 126560023 + ... + 126560074.

Almost surely, 2^6581122522 is an apocalyptic number.

6581122522 is a deficient number, since it is larger than the sum of its proper divisors (4049921594).

6581122522 is a wasteful number, since it uses less digits than its factorization.

6581122522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253120112.

The product of its digits is 19200, while the sum is 34.

The square root of 6581122522 is about 81124.1180044504. The cubic root of 6581122522 is about 1873.9873664012.

The spelling of 6581122522 in words is "six billion, five hundred eighty-one million, one hundred twenty-two thousand, five hundred twenty-two".