2604255210221 has 8 divisors (see below), whose sum is σ = 2976309697920. Its totient is φ = 2232205229808.

The previous prime is 2604255210191. The next prime is 2604255210247. The reversal of 2604255210221 is 1220125524062.

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

It is a cyclic number.

It is not a de Polignac number, because 2604255210221 - 2⁶ = 2604255210157 is a prime.

It is a super-3 number, since 3×2604255210221³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2604255210521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218360 + ... + 2292638.

It is an arithmetic number, because the mean of its divisors is an integer number (372038712240).

Almost surely, 2^{2604255210221} is an apocalyptic number.

It is an amenable number.

2604255210221 is a deficient number, since it is larger than the sum of its proper divisors (372054487699).

2604255210221 is a wasteful number, since it uses less digits than its factorization.

2604255210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2253643.

The product of its (nonzero) digits is 19200, while the sum is 32.

The spelling of 2604255210221 in words is "two trillion, six hundred four billion, two hundred fifty-five million, two hundred ten thousand, two hundred twenty-one".