206845959580 has 96 divisors (see below), whose sum is σ = 483121074240. Its totient is φ = 73893980160.

The previous prime is 206845959557. The next prime is 206845959601. The reversal of 206845959580 is 85959548602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1661920 + ... + 1782040.

It is an arithmetic number, because the mean of its divisors is an integer number (5032511190).

Almost surely, 2^206845959580 is an apocalyptic number.

206845959580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206845959580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241560537120).

206845959580 is an abundant number, since it is smaller than the sum of its proper divisors (276275114660).

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

206845959580 is a wasteful number, since it uses less digits than its factorization.

206845959580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120359 (or 120357 counting only the distinct ones).

The product of its (nonzero) digits is 31104000, while the sum is 61.

The spelling of 206845959580 in words is "two hundred six billion, eight hundred forty-five million, nine hundred fifty-nine thousand, five hundred eighty".