4221604585253 has 6 divisors (see below), whose sum is σ = 4640276114502. Its totient is φ = 3837822350120.

The previous prime is 4221604585229. The next prime is 4221604585283. The reversal of 4221604585253 is 3525854061224.

It can be written as a sum of positive squares in only one way, i.e., 2763966100324 + 1457638484929 = 1662518^2 + 1207327^2 .

It is not a de Polignac number, because 4221604585253 - 2²⁰ = 4221603536677 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4221604585198 and 4221604585207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221604585283) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17444646926 + ... + 17444647167.

It is an arithmetic number, because the mean of its divisors is an integer number (773379352417).

Almost surely, 2^{4221604585253} is an apocalyptic number.

It is an amenable number.

4221604585253 is a deficient number, since it is larger than the sum of its proper divisors (418671529249).

4221604585253 is a wasteful number, since it uses less digits than its factorization.

4221604585253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34889294115 (or 34889294104 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 47.

The spelling of 4221604585253 in words is "four trillion, two hundred twenty-one billion, six hundred four million, five hundred eighty-five thousand, two hundred fifty-three".