12850809408 has 70 divisors (see below), whose sum is σ = 38093840246. Its totient is φ = 4283601408.

The previous prime is 12850809397. The next prime is 12850809443. The reversal of 12850809408 is 80490805821.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8112965184 + 4737844224 = 90072^2 + 68832^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1234285 + ... + 1244652.

Almost surely, 2^12850809408 is an apocalyptic number.

12850809408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12850809408 is an abundant number, since it is smaller than the sum of its proper divisors (25243030838).

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

12850809408 is an equidigital number, since it uses as much as digits as its factorization.

12850809408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2478961 (or 2478942 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 45.

The spelling of 12850809408 in words is "twelve billion, eight hundred fifty million, eight hundred nine thousand, four hundred eight".