209093650428 has 48 divisors (see below), whose sum is σ = 527595053216. Its totient is φ = 64069539840.

The previous prime is 209093650427. The next prime is 209093650471. The reversal of 209093650428 is 824056390902.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209093650427) 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, 2743201 + ... + 2818392.

Almost surely, 2^209093650428 is an apocalyptic number.

It is an amenable number.

209093650428 is an abundant number, since it is smaller than the sum of its proper divisors (318501402788).

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

209093650428 is a wasteful number, since it uses less digits than its factorization.

209093650428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5561854 (or 5561852 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 48.

The spelling of 209093650428 in words is "two hundred nine billion, ninety-three million, six hundred fifty thousand, four hundred twenty-eight".