82668062524577 has 4 divisors (see below), whose sum is σ = 82802046419076. Its totient is φ = 82534078630080.

The previous prime is 82668062524573. The next prime is 82668062524589. The reversal of 82668062524577 is 77542526086628.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14029339571776 + 68638722952801 = 3745576^2 + 8284849^2 .

It is a cyclic number.

It is not a de Polignac number, because 82668062524577 - 2² = 82668062524573 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82668062524573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66991946324 + ... + 66991947557.

It is an arithmetic number, because the mean of its divisors is an integer number (20700511604769).

Almost surely, 2^{82668062524577} is an apocalyptic number.

It is an amenable number.

82668062524577 is a deficient number, since it is larger than the sum of its proper divisors (133983894499).

82668062524577 is a wasteful number, since it uses less digits than its factorization.

82668062524577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133983894498.

The product of its (nonzero) digits is 541900800, while the sum is 68.

The spelling of 82668062524577 in words is "eighty-two trillion, six hundred sixty-eight billion, sixty-two million, five hundred twenty-four thousand, five hundred seventy-seven".