209775028496 has 20 divisors (see below), whose sum is σ = 443388128784. Its totient is φ = 95352285600.

The previous prime is 209775028483. The next prime is 209775028511. The reversal of 209775028496 is 694820577902.

It is a happy number.

209775028496 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×209775028496² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 595951610 + ... + 595951961.

Almost surely, 2^209775028496 is an apocalyptic number.

It is an amenable number.

209775028496 is an abundant number, since it is smaller than the sum of its proper divisors (233613100288).

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

209775028496 is a wasteful number, since it uses less digits than its factorization.

209775028496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191903590 (or 1191903584 counting only the distinct ones).

The product of its (nonzero) digits is 15240960, while the sum is 59.

The spelling of 209775028496 in words is "two hundred nine billion, seven hundred seventy-five million, twenty-eight thousand, four hundred ninety-six".