82427558404 has 9 divisors (see below), whose sum is σ = 144249232071. Its totient is φ = 41213492100.

The previous prime is 82427558383. The next prime is 82427558443. The reversal of 82427558404 is 40485572428.

The square root of 82427558404 is 287102.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

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 in 2 ways as a sum of consecutive naturals, for example, 502429 + ... + 645979.

Almost surely, 2^82427558404 is an apocalyptic number.

82427558404 is the 287102-nd square number.

It is an amenable number.

82427558404 is a deficient number, since it is larger than the sum of its proper divisors (61821673667).

82427558404 is an frugal number, since it uses more digits than its factorization.

82427558404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287106 (or 143553 counting only the distinct ones).

The product of its (nonzero) digits is 2867200, while the sum is 49.

Multiplying 82427558404 by its sum of digits (49), we get a square (4038950361796 = 2009714²).

The spelling of 82427558404 in words is "eighty-two billion, four hundred twenty-seven million, five hundred fifty-eight thousand, four hundred four".