12598065901 has 4 divisors (see below), whose sum is σ = 12604389052. Its totient is φ = 12591742752.

The previous prime is 12598065871. The next prime is 12598065959. The reversal of 12598065901 is 10956089521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11605752900 + 992313001 = 107730^2 + 31501^2 .

It is a cyclic number.

It is not a de Polignac number, because 12598065901 - 2²⁵ = 12564511469 is a prime.

It is a super-2 number, since 2×12598065901² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12598065001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3158586 + ... + 3162571.

It is an arithmetic number, because the mean of its divisors is an integer number (3151097263).

Almost surely, 2^12598065901 is an apocalyptic number.

It is an amenable number.

12598065901 is a deficient number, since it is larger than the sum of its proper divisors (6323151).

12598065901 is an equidigital number, since it uses as much as digits as its factorization.

12598065901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6323150.

The product of its (nonzero) digits is 194400, while the sum is 46.

The spelling of 12598065901 in words is "twelve billion, five hundred ninety-eight million, sixty-five thousand, nine hundred one".