12884532845 has 16 divisors (see below), whose sum is σ = 15581665008. Its totient is φ = 10227548160.

The previous prime is 12884532839. The next prime is 12884532851. The reversal of 12884532845 is 54823548821.

It is an interprime number because it is at equal distance from previous prime (12884532839) and next prime (12884532851).

It can be written as a sum of positive squares in 8 ways, for example, as 736525321 + 12148007524 = 27139^2 + 110218^2 .

It is not a de Polignac number, because 12884532845 - 2²⁰ = 12883484269 is a prime.

It is a super-2 number, since 2×12884532845² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12884532793 and 12884532802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2365325 + ... + 2370765.

It is an arithmetic number, because the mean of its divisors is an integer number (973854063).

Almost surely, 2^12884532845 is an apocalyptic number.

It is an amenable number.

12884532845 is a deficient number, since it is larger than the sum of its proper divisors (2697132163).

12884532845 is a wasteful number, since it uses less digits than its factorization.

12884532845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9040.

The product of its digits is 2457600, while the sum is 50.

The spelling of 12884532845 in words is "twelve billion, eight hundred eighty-four million, five hundred thirty-two thousand, eight hundred forty-five".