81426528606 has 16 divisors (see below), whose sum is σ = 162889649424. Its totient is φ = 27136077504.

The previous prime is 81426528577. The next prime is 81426528647. The reversal of 81426528606 is 60682562418.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1495705 + ... + 1549188.

It is an arithmetic number, because the mean of its divisors is an integer number (10180603089).

Almost surely, 2^81426528606 is an apocalyptic number.

81426528606 is an abundant number, since it is smaller than the sum of its proper divisors (81463120818).

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

81426528606 is a wasteful number, since it uses less digits than its factorization.

81426528606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3049355.

The product of its (nonzero) digits is 1105920, while the sum is 48.

The spelling of 81426528606 in words is "eighty-one billion, four hundred twenty-six million, five hundred twenty-eight thousand, six hundred six".