205126921152 has 112 divisors (see below), whose sum is σ = 611296293280. Its totient is φ = 67438946304.

The previous prime is 205126921099. The next prime is 205126921159. The reversal of 205126921152 is 251129621502.

205126921152 is a `hidden beast` number, since 2 + 0 + 512 + 6 + 92 + 1 + 1 + 52 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205126921159) 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 15 ways as a sum of consecutive naturals, for example, 686923 + ... + 939210.

Almost surely, 2^205126921152 is an apocalyptic number.

It is an amenable number.

205126921152 is an abundant number, since it is smaller than the sum of its proper divisors (406169372128).

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

205126921152 is a wasteful number, since it uses less digits than its factorization.

205126921152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626227 (or 1626211 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The spelling of 205126921152 in words is "two hundred five billion, one hundred twenty-six million, nine hundred twenty-one thousand, one hundred fifty-two".