206271971328 has 128 divisors (see below), whose sum is σ = 564926379840. Its totient is φ = 66897838080.

The previous prime is 206271971287. The next prime is 206271971333. The reversal of 206271971328 is 823179172602.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3608893 + ... + 3665603.

Almost surely, 2^206271971328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206271971328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282463189920).

206271971328 is an abundant number, since it is smaller than the sum of its proper divisors (358654408512).

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

206271971328 is an frugal number, since it uses more digits than its factorization.

206271971328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56781 (or 56753 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 48.

The spelling of 206271971328 in words is "two hundred six billion, two hundred seventy-one million, nine hundred seventy-one thousand, three hundred twenty-eight".