206628436504 has 96 divisors (see below), whose sum is σ = 473530825440. Its totient is φ = 82516838400.

The previous prime is 206628436463. The next prime is 206628436513. The reversal of 206628436504 is 405634826602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9700714 + ... + 9721990.

It is an arithmetic number, because the mean of its divisors is an integer number (4932612765).

Almost surely, 2^206628436504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206628436504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236765412720).

206628436504 is an abundant number, since it is smaller than the sum of its proper divisors (266902388936).

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

206628436504 is a wasteful number, since it uses less digits than its factorization.

206628436504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21509 (or 21404 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 46.

The spelling of 206628436504 in words is "two hundred six billion, six hundred twenty-eight million, four hundred thirty-six thousand, five hundred four".