10121725447 has 4 divisors (see below), whose sum is σ = 10126055160. Its totient is φ = 10117395736.

The previous prime is 10121725441. The next prime is 10121725459. The reversal of 10121725447 is 74452712101.

10121725447 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10121725447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121725441) 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, 2161348 + ... + 2166025.

It is an arithmetic number, because the mean of its divisors is an integer number (2531513790).

Almost surely, 2^10121725447 is an apocalyptic number.

10121725447 is a deficient number, since it is larger than the sum of its proper divisors (4329713).

10121725447 is an equidigital number, since it uses as much as digits as its factorization.

10121725447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4329712.

The product of its (nonzero) digits is 15680, while the sum is 34.

The spelling of 10121725447 in words is "ten billion, one hundred twenty-one million, seven hundred twenty-five thousand, four hundred forty-seven".