21745483301 has 4 divisors (see below), whose sum is σ = 21745821132. Its totient is φ = 21745145472.

The previous prime is 21745483271. The next prime is 21745483307. The reversal of 21745483301 is 10338454712.

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 2141283076 + 19604200225 = 46274^2 + 140015^2 .

It is a cyclic number.

It is not a de Polignac number, because 21745483301 - 2⁶ = 21745483237 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 (21745483307) 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, 39116 + ... + 212181.

It is an arithmetic number, because the mean of its divisors is an integer number (5436455283).

Almost surely, 2^21745483301 is an apocalyptic number.

It is an amenable number.

21745483301 is a deficient number, since it is larger than the sum of its proper divisors (337831).

21745483301 is an equidigital number, since it uses as much as digits as its factorization.

21745483301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337830.

The product of its (nonzero) digits is 80640, while the sum is 38.

The spelling of 21745483301 in words is "twenty-one billion, seven hundred forty-five million, four hundred eighty-three thousand, three hundred one".