204650399426 has 64 divisors (see below), whose sum is σ = 354672691200. Its totient is φ = 87587438400.

The previous prime is 204650399381. The next prime is 204650399431. The reversal of 204650399426 is 624993056402.

204650399426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×204650399426² (a number of 23 digits) contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 52058681 + ... + 52062611.

It is an arithmetic number, because the mean of its divisors is an integer number (5541760800).

Almost surely, 2^204650399426 is an apocalyptic number.

204650399426 is a deficient number, since it is larger than the sum of its proper divisors (150022291774).

204650399426 is a wasteful number, since it uses less digits than its factorization.

204650399426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4695.

The product of its (nonzero) digits is 2799360, while the sum is 50.

The spelling of 204650399426 in words is "two hundred four billion, six hundred fifty million, three hundred ninety-nine thousand, four hundred twenty-six".