12839502520 has 64 divisors (see below), whose sum is σ = 32463789120. Its totient is φ = 4534616064.

The previous prime is 12839502517. The next prime is 12839502521. The reversal of 12839502520 is 2520593821.

It is a super-2 number, since 2×12839502520² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12839502520.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12839502521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 524809 + ... + 548728.

It is an arithmetic number, because the mean of its divisors is an integer number (507246705).

Almost surely, 2^12839502520 is an apocalyptic number.

12839502520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12839502520 is an abundant number, since it is smaller than the sum of its proper divisors (19624286600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12839502520 is a wasteful number, since it uses less digits than its factorization.

12839502520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073584 (or 1073580 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 12839502520 in words is "twelve billion, eight hundred thirty-nine million, five hundred two thousand, five hundred twenty".