12500687698 has 8 divisors (see below), whose sum is σ = 18760048380. Its totient is φ = 6247338240.

The previous prime is 12500687671. The next prime is 12500687723. The reversal of 12500687698 is 89678600521.

12500687698 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 10837434609 + 1663253089 = 104103^2 + 40783^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1497603 + ... + 1505926.

Almost surely, 2^12500687698 is an apocalyptic number.

12500687698 is a deficient number, since it is larger than the sum of its proper divisors (6259360682).

12500687698 is a wasteful number, since it uses less digits than its factorization.

12500687698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3005612.

The product of its (nonzero) digits is 1451520, while the sum is 52.

The spelling of 12500687698 in words is "twelve billion, five hundred million, six hundred eighty-seven thousand, six hundred ninety-eight".