206073513256 has 64 divisors (see below), whose sum is σ = 442563609600. Its totient is φ = 89114508288.

The previous prime is 206073513229. The next prime is 206073513343. The reversal of 206073513256 is 652315370602.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132925 + ... + 655603.

It is an arithmetic number, because the mean of its divisors is an integer number (6915056400).

Almost surely, 2^206073513256 is an apocalyptic number.

206073513256 is a gapful number since it is divisible by the number (26) 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 206073513256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221281804800).

206073513256 is an abundant number, since it is smaller than the sum of its proper divisors (236490096344).

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

206073513256 is a wasteful number, since it uses less digits than its factorization.

206073513256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522938 (or 522934 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 40.

Adding to 206073513256 its reverse (652315370602), we get a palindrome (858388883858).

The spelling of 206073513256 in words is "two hundred six billion, seventy-three million, five hundred thirteen thousand, two hundred fifty-six".