12860920836 has 81 divisors (see below), whose sum is σ = 33394243519. Its totient is φ = 4173340800.

The previous prime is 12860920829. The next prime is 12860920837. The reversal of 12860920836 is 63802906821.

The square root of 12860920836 is 113406.

It is a perfect power (a square), and thus also a powerful number.

12860920836 is a `hidden beast` number, since 1 + 2 + 8 + 609 + 2 + 0 + 8 + 36 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 5945335236 + 6915585600 = 77106^2 + 83160^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12860920791 and 12860920800.

It is not an unprimeable number, because it can be changed into a prime (12860920837) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 27897646 + ... + 27898106.

Almost surely, 2^12860920836 is an apocalyptic number.

12860920836 is the 113406-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12860920836

12860920836 is an abundant number, since it is smaller than the sum of its proper divisors (20533322683).

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

12860920836 is an equidigital number, since it uses as much as digits as its factorization.

12860920836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014 (or 507 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 12860920836 in words is "twelve billion, eight hundred sixty million, nine hundred twenty thousand, eight hundred thirty-six".