204900851339085 has 32 divisors (see below), whose sum is σ = 357668077805568. Its totient is φ = 99339490797120.

The previous prime is 204900851339053. The next prime is 204900851339189. The reversal of 204900851339085 is 580933158009402.

It is a happy number.

It is not a de Polignac number, because 204900851339085 - 2⁵ = 204900851339053 is a prime.

It is a super-2 number, since 2×204900851339085² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37274257 + ... + 42416646.

It is an arithmetic number, because the mean of its divisors is an integer number (11177127431424).

Almost surely, 2^{204900851339085} is an apocalyptic number.

It is an amenable number.

204900851339085 is a deficient number, since it is larger than the sum of its proper divisors (152767226466483).

204900851339085 is a wasteful number, since it uses less digits than its factorization.

204900851339085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79706505.

The product of its (nonzero) digits is 9331200, while the sum is 57.

The spelling of 204900851339085 in words is "two hundred four trillion, nine hundred billion, eight hundred fifty-one million, three hundred thirty-nine thousand, eighty-five".