206500428542388 has 24 divisors (see below), whose sum is σ = 481836184564000. Its totient is φ = 68833211709600.

The previous prime is 206500428542383. The next prime is 206500428542491. The reversal of 206500428542388 is 883245824005602.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206500428542381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29792638 + ... + 36063861.

Almost surely, 2^{206500428542388} is an apocalyptic number.

It is an amenable number.

206500428542388 is an abundant number, since it is smaller than the sum of its proper divisors (275335756021612).

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

206500428542388 is a wasteful number, since it uses less digits than its factorization.

206500428542388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66117807 (or 66117805 counting only the distinct ones).

The product of its (nonzero) digits is 29491200, while the sum is 57.

The spelling of 206500428542388 in words is "two hundred six trillion, five hundred billion, four hundred twenty-eight million, five hundred forty-two thousand, three hundred eighty-eight".