10147710721 has 4 divisors (see below), whose sum is σ = 10164823812. Its totient is φ = 10130597632.

The previous prime is 10147710691. The next prime is 10147710731. The reversal of 10147710721 is 12701774101.

10147710721 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 can be written as a sum of positive squares in 2 ways, for example, as 4426906225 + 5720804496 = 66535^2 + 75636^2 .

It is a cyclic number.

It is not a de Polignac number, because 10147710721 - 2³¹ = 8000227073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10147710731) 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, 8555656 + ... + 8556841.

It is an arithmetic number, because the mean of its divisors is an integer number (2541205953).

Almost surely, 2^10147710721 is an apocalyptic number.

It is an amenable number.

10147710721 is a deficient number, since it is larger than the sum of its proper divisors (17113091).

10147710721 is an equidigital number, since it uses as much as digits as its factorization.

10147710721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17113090.

The product of its (nonzero) digits is 2744, while the sum is 31.

The spelling of 10147710721 in words is "ten billion, one hundred forty-seven million, seven hundred ten thousand, seven hundred twenty-one".