82665648811870 has 16 divisors (see below), whose sum is σ = 148960081009440. Its totient is φ = 33030278825184.

The previous prime is 82665648811817. The next prime is 82665648811883. The reversal of 82665648811870 is 7811884656628.

It is a self number, because there is not a number n which added to its sum of digits gives 82665648811870.

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, 4497577797 + ... + 4497596176.

It is an arithmetic number, because the mean of its divisors is an integer number (9310005063090).

Almost surely, 2^{82665648811870} is an apocalyptic number.

82665648811870 is a deficient number, since it is larger than the sum of its proper divisors (66294432197570).

82665648811870 is a wasteful number, since it uses less digits than its factorization.

82665648811870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8995174899.

The product of its (nonzero) digits is 247726080, while the sum is 70.

The spelling of 82665648811870 in words is "eighty-two trillion, six hundred sixty-five billion, six hundred forty-eight million, eight hundred eleven thousand, eight hundred seventy".