12884015845 has 16 divisors (see below), whose sum is σ = 16480162800. Its totient is φ = 9635789824.

The previous prime is 12884015839. The next prime is 12884015873. The reversal of 12884015845 is 54851048821.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 2259766369 + 10624249476 = 47537^2 + 103074^2 .

It is a cyclic number.

It is not a de Polignac number, because 12884015845 - 2¹¹ = 12884013797 is a prime.

It is a super-2 number, since 2×12884015845² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12884015795 and 12884015804.

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, 495982 + ... + 521311.

It is an arithmetic number, because the mean of its divisors is an integer number (1030010175).

Almost surely, 2^12884015845 is an apocalyptic number.

It is an amenable number.

12884015845 is a deficient number, since it is larger than the sum of its proper divisors (3596146955).

12884015845 is a wasteful number, since it uses less digits than its factorization.

12884015845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017464.

The product of its (nonzero) digits is 409600, while the sum is 46.

The spelling of 12884015845 in words is "twelve billion, eight hundred eighty-four million, fifteen thousand, eight hundred forty-five".