12581887191 has 32 divisors (see below), whose sum is σ = 18473184000. Its totient is φ = 7586143488.

The previous prime is 12581887189. The next prime is 12581887207. The reversal of 12581887191 is 19178818521.

It is not a de Polignac number, because 12581887191 - 2¹ = 12581887189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12581887181) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104356 + ... + 189878.

It is an arithmetic number, because the mean of its divisors is an integer number (577287000).

Almost surely, 2^12581887191 is an apocalyptic number.

12581887191 is a deficient number, since it is larger than the sum of its proper divisors (5891296809).

12581887191 is a wasteful number, since it uses less digits than its factorization.

12581887191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85663.

The product of its digits is 322560, while the sum is 51.

The spelling of 12581887191 in words is "twelve billion, five hundred eighty-one million, eight hundred eighty-seven thousand, one hundred ninety-one".