206164253404 has 6 divisors (see below), whose sum is σ = 360787443464. Its totient is φ = 103082126700.

The previous prime is 206164253387. The next prime is 206164253411. The reversal of 206164253404 is 404352461602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25770531672 + ... + 25770531679.

Almost surely, 2^206164253404 is an apocalyptic number.

It is an amenable number.

206164253404 is a deficient number, since it is larger than the sum of its proper divisors (154623190060).

206164253404 is a wasteful number, since it uses less digits than its factorization.

206164253404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51541063355 (or 51541063353 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 37.

The spelling of 206164253404 in words is "two hundred six billion, one hundred sixty-four million, two hundred fifty-three thousand, four hundred four".