206632465653 has 4 divisors (see below), whose sum is σ = 275509954208. Its totient is φ = 137754977100.

The previous prime is 206632465603. The next prime is 206632465661. The reversal of 206632465653 is 356564236602.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 206632465653 - 2²⁵ = 206598911221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206632465603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34438744273 + ... + 34438744278.

It is an arithmetic number, because the mean of its divisors is an integer number (68877488552).

Almost surely, 2^206632465653 is an apocalyptic number.

It is an amenable number.

206632465653 is a deficient number, since it is larger than the sum of its proper divisors (68877488555).

206632465653 is an equidigital number, since it uses as much as digits as its factorization.

206632465653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68877488554.

The product of its (nonzero) digits is 4665600, while the sum is 48.

The spelling of 206632465653 in words is "two hundred six billion, six hundred thirty-two million, four hundred sixty-five thousand, six hundred fifty-three".