82556485638 has 32 divisors (see below), whose sum is σ = 180710006400. Its totient is φ = 24935621760.

The previous prime is 82556485631. The next prime is 82556485639. The reversal of 82556485638 is 83658465528.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82556485631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2016963 + ... + 2057486.

It is an arithmetic number, because the mean of its divisors is an integer number (5647187700).

Almost surely, 2^82556485638 is an apocalyptic number.

82556485638 is an abundant number, since it is smaller than the sum of its proper divisors (98153520762).

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

82556485638 is a wasteful number, since it uses less digits than its factorization.

82556485638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4074772.

The product of its digits is 55296000, while the sum is 60.

The spelling of 82556485638 in words is "eighty-two billion, five hundred fifty-six million, four hundred eighty-five thousand, six hundred thirty-eight".