82861340520 has 64 divisors (see below), whose sum is σ = 284096027520. Its totient is φ = 18939734784.

The previous prime is 82861340467. The next prime is 82861340531. The reversal of 82861340520 is 2504316828.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49321387 + ... + 49323066.

It is an arithmetic number, because the mean of its divisors is an integer number (4439000430).

Almost surely, 2^82861340520 is an apocalyptic number.

It is an amenable number.

82861340520 is an abundant number, since it is smaller than the sum of its proper divisors (201234687000).

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

82861340520 is a wasteful number, since it uses less digits than its factorization.

82861340520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98644474 (or 98644470 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The spelling of 82861340520 in words is "eighty-two billion, eight hundred sixty-one million, three hundred forty thousand, five hundred twenty".