209232820384 has 48 divisors (see below), whose sum is σ = 471326179968. Its totient is φ = 89566002432.

The previous prime is 209232820343. The next prime is 209232820397. The reversal of 209232820384 is 483028232902.

It is a self number, because there is not a number n which added to its sum of digits gives 209232820384.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356452 + ... + 738595.

It is an arithmetic number, because the mean of its divisors is an integer number (9819295416).

Almost surely, 2^209232820384 is an apocalyptic number.

It is an amenable number.

209232820384 is an abundant number, since it is smaller than the sum of its proper divisors (262093359584).

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

209232820384 is a wasteful number, since it uses less digits than its factorization.

209232820384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095917 (or 1095909 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 43.

The spelling of 209232820384 in words is "two hundred nine billion, two hundred thirty-two million, eight hundred twenty thousand, three hundred eighty-four".