82772875169 has 4 divisors (see below), whose sum is σ = 87641867844. Its totient is φ = 77903882496.

The previous prime is 82772875123. The next prime is 82772875189. The reversal of 82772875169 is 96157827728.

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 71299680400 + 11473194769 = 267020^2 + 107113^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82772875169 is a prime.

It is a super-2 number, since 2×82772875169² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82772875189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2434496312 + ... + 2434496345.

It is an arithmetic number, because the mean of its divisors is an integer number (21910466961).

Almost surely, 2^82772875169 is an apocalyptic number.

It is an amenable number.

82772875169 is a deficient number, since it is larger than the sum of its proper divisors (4868992675).

82772875169 is a wasteful number, since it uses less digits than its factorization.

82772875169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4868992674.

The product of its digits is 23708160, while the sum is 62.

The spelling of 82772875169 in words is "eighty-two billion, seven hundred seventy-two million, eight hundred seventy-five thousand, one hundred sixty-nine".