12781582350 has 48 divisors (see below), whose sum is σ = 31745674992. Its totient is φ = 3403330560.

The previous prime is 12781582339. The next prime is 12781582393. The reversal of 12781582350 is 5328518721.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37644 + ... + 164256.

It is an arithmetic number, because the mean of its divisors is an integer number (661368229).

Almost surely, 2^12781582350 is an apocalyptic number.

12781582350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12781582350 is an abundant number, since it is smaller than the sum of its proper divisors (18964092642).

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

12781582350 is a wasteful number, since it uses less digits than its factorization.

12781582350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127301 (or 127296 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 42.

The spelling of 12781582350 in words is "twelve billion, seven hundred eighty-one million, five hundred eighty-two thousand, three hundred fifty".