206207866080 has 144 divisors (see below), whose sum is σ = 705441142224. Its totient is φ = 54851481600.

The previous prime is 206207866061. The next prime is 206207866091. The reversal of 206207866080 is 80668702602.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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, 398887 + ... + 755993.

It is an arithmetic number, because the mean of its divisors is an integer number (4898896821).

Almost surely, 2^206207866080 is an apocalyptic number.

206207866080 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 206207866080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (352720571112).

206207866080 is an abundant number, since it is smaller than the sum of its proper divisors (499233276144).

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

206207866080 is a wasteful number, since it uses less digits than its factorization.

206207866080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357529 (or 357518 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 206207866080 in words is "two hundred six billion, two hundred seven million, eight hundred sixty-six thousand, eighty".