82510666878 has 32 divisors (see below), whose sum is σ = 166664534400. Its totient is φ = 27231029280.

The previous prime is 82510666871. The next prime is 82510666907. The reversal of 82510666878 is 87866601528.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82510666871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79173 + ... + 413871.

It is an arithmetic number, because the mean of its divisors is an integer number (5208266700).

Almost surely, 2^82510666878 is an apocalyptic number.

82510666878 is an abundant number, since it is smaller than the sum of its proper divisors (84153867522).

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

82510666878 is a wasteful number, since it uses less digits than its factorization.

82510666878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335112.

The product of its (nonzero) digits is 7741440, while the sum is 57.

The spelling of 82510666878 in words is "eighty-two billion, five hundred ten million, six hundred sixty-six thousand, eight hundred seventy-eight".