82687777565 has 8 divisors (see below), whose sum is σ = 99548544480. Its totient is φ = 65934747792.

The previous prime is 82687777559. The next prime is 82687777597. The reversal of 82687777565 is 56577778628.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82687777565 - 2¹⁴ = 82687761181 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 82687777495 and 82687777504.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26932595 + ... + 26935664.

It is an arithmetic number, because the mean of its divisors is an integer number (12443568060).

Almost surely, 2^82687777565 is an apocalyptic number.

It is an amenable number.

82687777565 is a deficient number, since it is larger than the sum of its proper divisors (16860766915).

82687777565 is a wasteful number, since it uses less digits than its factorization.

82687777565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53868571.

The product of its digits is 276595200, while the sum is 68.

The spelling of 82687777565 in words is "eighty-two billion, six hundred eighty-seven million, seven hundred seventy-seven thousand, five hundred sixty-five".