82677721670138 has 32 divisors (see below), whose sum is σ = 142185394185984. Its totient is φ = 35320277970432.

The previous prime is 82677721670083. The next prime is 82677721670143. The reversal of 82677721670138 is 83107612777628.

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, 130485131 + ... + 131117217.

It is an arithmetic number, because the mean of its divisors is an integer number (4443293568312).

Almost surely, 2^{82677721670138} is an apocalyptic number.

82677721670138 is a deficient number, since it is larger than the sum of its proper divisors (59507672515846).

82677721670138 is a wasteful number, since it uses less digits than its factorization.

82677721670138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661886.

The product of its (nonzero) digits is 66382848, while the sum is 65.

The spelling of 82677721670138 in words is "eighty-two trillion, six hundred seventy-seven billion, seven hundred twenty-one million, six hundred seventy thousand, one hundred thirty-eight".