206257210523 has 36 divisors (see below), whose sum is σ = 259935179328. Its totient is φ = 163112564160.

The previous prime is 206257210477. The next prime is 206257210541. The reversal of 206257210523 is 325012752602.

It is not a de Polignac number, because 206257210523 - 2²⁶ = 206190101659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206257210573) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 21451265 + ... + 21460877.

It is an arithmetic number, because the mean of its divisors is an integer number (7220421648).

Almost surely, 2^206257210523 is an apocalyptic number.

206257210523 is a deficient number, since it is larger than the sum of its proper divisors (53677968805).

206257210523 is a wasteful number, since it uses less digits than its factorization.

206257210523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12244 (or 12224 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 35.

The spelling of 206257210523 in words is "two hundred six billion, two hundred fifty-seven million, two hundred ten thousand, five hundred twenty-three".