2573391868221 has 8 divisors (see below), whose sum is σ = 3431200392160. Its totient is φ = 1715588961552.

The previous prime is 2573391868219. The next prime is 2573391868253. The reversal of 2573391868221 is 1228681933752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2573391868221 - 2¹ = 2573391868219 is a prime.

It is the 1604180-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2573391868921) by changing a digit.

It is a nontrivial repunit in base 1604179.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183835 + ... + 2276088.

It is an arithmetic number, because the mean of its divisors is an integer number (428900049020).

Almost surely, 2^{2573391868221} is an apocalyptic number.

It is an amenable number.

2573391868221 is a deficient number, since it is larger than the sum of its proper divisors (857808523939).

2573391868221 is a wasteful number, since it uses less digits than its factorization.

2573391868221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2808635.

The product of its digits is 8709120, while the sum is 57.

The spelling of 2573391868221 in words is "two trillion, five hundred seventy-three billion, three hundred ninety-one million, eight hundred sixty-eight thousand, two hundred twenty-one".