205851264126 has 32 divisors (see below), whose sum is σ = 430047180288. Its totient is φ = 65565820320.

The previous prime is 205851264089. The next prime is 205851264127. The reversal of 205851264126 is 621462158502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205851264127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 637845 + ... + 904736.

It is an arithmetic number, because the mean of its divisors is an integer number (13438974384).

Almost surely, 2^205851264126 is an apocalyptic number.

205851264126 is an abundant number, since it is smaller than the sum of its proper divisors (224195916162).

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

205851264126 is a wasteful number, since it uses less digits than its factorization.

205851264126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1543576.

The product of its (nonzero) digits is 230400, while the sum is 42.

The spelling of 205851264126 in words is "two hundred five billion, eight hundred fifty-one million, two hundred sixty-four thousand, one hundred twenty-six".