206288145140 has 48 divisors (see below), whose sum is σ = 540099874944. Its totient is φ = 64297603200.

The previous prime is 206288145059. The next prime is 206288145169. The reversal of 206288145140 is 41541882602.

206288145140 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 an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 66975131 + ... + 66978210.

It is an arithmetic number, because the mean of its divisors is an integer number (11252080728).

Almost surely, 2^206288145140 is an apocalyptic number.

206288145140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206288145140 is an abundant number, since it is smaller than the sum of its proper divisors (333811729804).

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

206288145140 is a wasteful number, since it uses less digits than its factorization.

206288145140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133953368 (or 133953366 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 41.

The spelling of 206288145140 in words is "two hundred six billion, two hundred eighty-eight million, one hundred forty-five thousand, one hundred forty".