82470569869 has 8 divisors (see below), whose sum is σ = 82752039288. Its totient is φ = 82189478400.

The previous prime is 82470569861. The next prime is 82470569899. The reversal of 82470569869 is 96896507428.

It can be written as a sum of positive squares in 4 ways, for example, as 24214472100 + 58256097769 = 155610^2 + 241363^2 .

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 82470569869 - 2³ = 82470569861 is a prime.

It is a super-2 number, since 2×82470569869² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82470569869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82470569861) by changing a digit.

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, 346159 + ... + 533635.

It is an arithmetic number, because the mean of its divisors is an integer number (10344004911).

Almost surely, 2^82470569869 is an apocalyptic number.

It is an amenable number.

82470569869 is a deficient number, since it is larger than the sum of its proper divisors (281469419).

82470569869 is a wasteful number, since it uses less digits than its factorization.

82470569869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188975.

The product of its (nonzero) digits is 52254720, while the sum is 64.

The spelling of 82470569869 in words is "eighty-two billion, four hundred seventy million, five hundred sixty-nine thousand, eight hundred sixty-nine".