82662278256778 has 32 divisors (see below), whose sum is σ = 135482840877312. Its totient is φ = 37513432070400.

The previous prime is 82662278256763. The next prime is 82662278256797. The reversal of 82662278256778 is 87765287226628.

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, 56756175 + ... + 58194397.

It is an arithmetic number, because the mean of its divisors is an integer number (4233838777416).

Almost surely, 2^{82662278256778} is an apocalyptic number.

82662278256778 is a deficient number, since it is larger than the sum of its proper divisors (52820562620534).

82662278256778 is a wasteful number, since it uses less digits than its factorization.

82662278256778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1442430.

The product of its digits is 3034644480, while the sum is 76.

The spelling of 82662278256778 in words is "eighty-two trillion, six hundred sixty-two billion, two hundred seventy-eight million, two hundred fifty-six thousand, seven hundred seventy-eight".