12591100657900 has 72 divisors (see below), whose sum is σ = 27642692160720. Its totient is φ = 4977506688000.

The previous prime is 12591100657853. The next prime is 12591100657901. The reversal of 12591100657900 is 975600119521.

It is not an unprimeable number, because it can be changed into a prime (12591100657901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18633960 + ... + 19297840.

It is an arithmetic number, because the mean of its divisors is an integer number (383926280010).

Almost surely, 2^{12591100657900} is an apocalyptic number.

12591100657900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12591100657900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13821346080360).

12591100657900 is an abundant number, since it is smaller than the sum of its proper divisors (15051591502820).

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

12591100657900 is a wasteful number, since it uses less digits than its factorization.

12591100657900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666115 (or 666108 counting only the distinct ones).

The product of its (nonzero) digits is 170100, while the sum is 46.

The spelling of 12591100657900 in words is "twelve trillion, five hundred ninety-one billion, one hundred million, six hundred fifty-seven thousand, nine hundred".