14687907121 has 4 divisors (see below), whose sum is σ = 14703718500. Its totient is φ = 14672095744.

The previous prime is 14687907109. The next prime is 14687907139. The reversal of 14687907121 is 12170978641.

It is a happy number.

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 2879824896 + 11808082225 = 53664^2 + 108665^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14687907121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14687907151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7904296 + ... + 7906153.

It is an arithmetic number, because the mean of its divisors is an integer number (3675929625).

Almost surely, 2^14687907121 is an apocalyptic number.

It is an amenable number.

14687907121 is a deficient number, since it is larger than the sum of its proper divisors (15811379).

14687907121 is an equidigital number, since it uses as much as digits as its factorization.

14687907121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15811378.

The product of its (nonzero) digits is 169344, while the sum is 46.

The spelling of 14687907121 in words is "fourteen billion, six hundred eighty-seven million, nine hundred seven thousand, one hundred twenty-one".