206030213604 has 30 divisors (see below), whose sum is σ = 538603676534. Its totient is φ = 68676737760.

The previous prime is 206030213591. The next prime is 206030213611. The reversal of 206030213604 is 406312030602.

206030213604 is a `hidden beast` number, since 2 + 0 + 6 + 0 + 30 + 21 + 3 + 604 = 666.

It can be written as a sum of positive squares in only one way, i.e., 146499093504 + 59531120100 = 382752^2 + 243990^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 317947537 + ... + 317948184.

Almost surely, 2^206030213604 is an apocalyptic number.

It is an amenable number.

206030213604 is an abundant number, since it is smaller than the sum of its proper divisors (332573462930).

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

206030213604 is a wasteful number, since it uses less digits than its factorization.

206030213604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635895737 (or 635895726 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The spelling of 206030213604 in words is "two hundred six billion, thirty million, two hundred thirteen thousand, six hundred four".