2600855021 has 8 divisors (see below), whose sum is σ = 2622219264. Its totient is φ = 2579577840.

The previous prime is 2600855017. The next prime is 2600855039. The reversal of 2600855021 is 1205580062.

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 2600855021 - 2² = 2600855017 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 (2600855011) 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, 38915 + ... + 81951.

It is an arithmetic number, because the mean of its divisors is an integer number (327777408).

Almost surely, 2^2600855021 is an apocalyptic number.

It is an amenable number.

2600855021 is a deficient number, since it is larger than the sum of its proper divisors (21364243).

2600855021 is a wasteful number, since it uses less digits than its factorization.

2600855021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43531.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 2600855021 is about 50998.5786174478. The cubic root of 2600855021 is about 1375.2195829590.

The spelling of 2600855021 in words is "two billion, six hundred million, eight hundred fifty-five thousand, twenty-one".