206487888840 has 96 divisors (see below), whose sum is σ = 692733600000. Its totient is φ = 53287194240.

The previous prime is 206487888829. The next prime is 206487888881. The reversal of 206487888840 is 48888784602.

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, 9240090 + ... + 9262409.

It is an arithmetic number, because the mean of its divisors is an integer number (7215975000).

Almost surely, 2^206487888840 is an apocalyptic number.

206487888840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206487888840 is an abundant number, since it is smaller than the sum of its proper divisors (486245711160).

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

206487888840 is a wasteful number, since it uses less digits than its factorization.

206487888840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18502547 (or 18502540 counting only the distinct ones).

The product of its (nonzero) digits is 44040192, while the sum is 63.

The spelling of 206487888840 in words is "two hundred six billion, four hundred eighty-seven million, eight hundred eighty-eight thousand, eight hundred forty".