206138290051 has 8 divisors (see below), whose sum is σ = 206477979840. Its totient is φ = 205798683048.

The previous prime is 206138290049. The next prime is 206138290097. The reversal of 206138290051 is 150092831602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 206138290051 - 2¹ = 206138290049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206138290951) 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, 6750720 + ... + 6781186.

It is an arithmetic number, because the mean of its divisors is an integer number (25809747480).

Almost surely, 2^206138290051 is an apocalyptic number.

206138290051 is a deficient number, since it is larger than the sum of its proper divisors (339689789).

206138290051 is a wasteful number, since it uses less digits than its factorization.

206138290051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41393.

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 206138290051 in words is "two hundred six billion, one hundred thirty-eight million, two hundred ninety thousand, fifty-one".