82565151517 has 8 divisors (see below), whose sum is σ = 82902201912. Its totient is φ = 82228224000.

The previous prime is 82565151499. The next prime is 82565151521. The reversal of 82565151517 is 71515156528.

It can be written as a sum of positive squares in 4 ways, for example, as 78105716676 + 4459434841 = 279474^2 + 66779^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82565151517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82565151547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1463167 + ... + 1518547.

It is an arithmetic number, because the mean of its divisors is an integer number (10362775239).

Almost surely, 2^82565151517 is an apocalyptic number.

It is an amenable number.

82565151517 is a deficient number, since it is larger than the sum of its proper divisors (337050395).

82565151517 is a wasteful number, since it uses less digits than its factorization.

82565151517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61439.

The product of its digits is 420000, while the sum is 46.

The spelling of 82565151517 in words is "eighty-two billion, five hundred sixty-five million, one hundred fifty-one thousand, five hundred seventeen".