206485430742 has 64 divisors (see below), whose sum is σ = 464855328000. Its totient is φ = 67930337664.

The previous prime is 206485430741. The next prime is 206485430783. The reversal of 206485430742 is 247034584602.

It is a happy number.

206485430742 is a `hidden beast` number, since 2 + 0 + 64 + 8 + 543 + 0 + 7 + 42 = 666.

206485430742 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206485430741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4499509 + ... + 4545167.

It is an arithmetic number, because the mean of its divisors is an integer number (7263364500).

Almost surely, 2^206485430742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206485430742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232427664000).

206485430742 is an abundant number, since it is smaller than the sum of its proper divisors (258369897258).

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

206485430742 is a wasteful number, since it uses less digits than its factorization.

206485430742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46762 (or 46756 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 45.

The spelling of 206485430742 in words is "two hundred six billion, four hundred eighty-five million, four hundred thirty thousand, seven hundred forty-two".