205426901100 has 36 divisors (see below), whose sum is σ = 594368501384. Its totient is φ = 54780506880.

The previous prime is 205426901089. The next prime is 205426901123. The reversal of 205426901100 is 1109624502.

205426901100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 342377869 + ... + 342378468.

Almost surely, 2^205426901100 is an apocalyptic number.

205426901100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205426901100 is an abundant number, since it is smaller than the sum of its proper divisors (388941600284).

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

205426901100 is a wasteful number, since it uses less digits than its factorization.

205426901100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684756354 (or 684756347 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The spelling of 205426901100 in words is "two hundred five billion, four hundred twenty-six million, nine hundred one thousand, one hundred".