12581851398 has 16 divisors (see below), whose sum is σ = 25263959616. Its totient is φ = 4177241000.

The previous prime is 12581851397. The next prime is 12581851423. The reversal of 12581851398 is 89315818521.

It is a self number, because there is not a number n which added to its sum of digits gives 12581851398.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12581851397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4175736 + ... + 4178747.

It is an arithmetic number, because the mean of its divisors is an integer number (1578997476).

Almost surely, 2^12581851398 is an apocalyptic number.

12581851398 is an abundant number, since it is smaller than the sum of its proper divisors (12682108218).

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

12581851398 is a wasteful number, since it uses less digits than its factorization.

12581851398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8354739.

The product of its digits is 691200, while the sum is 51.

The spelling of 12581851398 in words is "twelve billion, five hundred eighty-one million, eight hundred fifty-one thousand, three hundred ninety-eight".