206213243654 has 16 divisors (see below), whose sum is σ = 343806644880. Its totient is φ = 91964739360.

The previous prime is 206213243653. The next prime is 206213243659. The reversal of 206213243654 is 456342312602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206213243653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88426469 + ... + 88428800.

It is an arithmetic number, because the mean of its divisors is an integer number (21487915305).

Almost surely, 2^206213243654 is an apocalyptic number.

206213243654 is a deficient number, since it is larger than the sum of its proper divisors (137593401226).

206213243654 is a wasteful number, since it uses less digits than its factorization.

206213243654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176855335.

The product of its (nonzero) digits is 207360, while the sum is 38.

The spelling of 206213243654 in words is "two hundred six billion, two hundred thirteen million, two hundred forty-three thousand, six hundred fifty-four".