82665178763212 has 12 divisors (see below), whose sum is σ = 149652478795680. Its totient is φ = 39907327678736.

The previous prime is 82665178763191. The next prime is 82665178763243. The reversal of 82665178763212 is 21236787156628.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356315425588 + ... + 356315425819.

It is an arithmetic number, because the mean of its divisors is an integer number (12471039899640).

Almost surely, 2^{82665178763212} is an apocalyptic number.

It is an amenable number.

82665178763212 is a deficient number, since it is larger than the sum of its proper divisors (66987300032468).

82665178763212 is a wasteful number, since it uses less digits than its factorization.

82665178763212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712630851440 (or 712630851438 counting only the distinct ones).

The product of its digits is 81285120, while the sum is 64.

The spelling of 82665178763212 in words is "eighty-two trillion, six hundred sixty-five billion, one hundred seventy-eight million, seven hundred sixty-three thousand, two hundred twelve".