10021723445 has 4 divisors (see below), whose sum is σ = 12026068140. Its totient is φ = 8017378752.

The previous prime is 10021723427. The next prime is 10021723457. The reversal of 10021723445 is 54432712001.

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 5834209924 + 4187513521 = 76382^2 + 64711^2 .

It is a cyclic number.

It is not a de Polignac number, because 10021723445 - 2⁸ = 10021723189 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1002172340 + ... + 1002172349.

It is an arithmetic number, because the mean of its divisors is an integer number (3006517035).

Almost surely, 2^10021723445 is an apocalyptic number.

It is an amenable number.

10021723445 is a deficient number, since it is larger than the sum of its proper divisors (2004344695).

10021723445 is an equidigital number, since it uses as much as digits as its factorization.

10021723445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2004344694.

The product of its (nonzero) digits is 6720, while the sum is 29.

The spelling of 10021723445 in words is "ten billion, twenty-one million, seven hundred twenty-three thousand, four hundred forty-five".