205470765126 has 64 divisors (see below), whose sum is σ = 500095814400. Its totient is φ = 62015760000.

The previous prime is 205470765103. The next prime is 205470765127. The reversal of 205470765126 is 621567074502.

205470765126 is a `hidden beast` number, since 20 + 5 + 47 + 0 + 76 + 512 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205470765127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 539971 + ... + 838158.

It is an arithmetic number, because the mean of its divisors is an integer number (7813997100).

Almost surely, 2^205470765126 is an apocalyptic number.

205470765126 is an abundant number, since it is smaller than the sum of its proper divisors (294625049274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205470765126 is a wasteful number, since it uses less digits than its factorization.

205470765126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378402 (or 1378396 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The spelling of 205470765126 in words is "two hundred five billion, four hundred seventy million, seven hundred sixty-five thousand, one hundred twenty-six".