206154322136133 has 32 divisors (see below), whose sum is σ = 316605002959872. Its totient is φ = 116878444550400.

The previous prime is 206154322136117. The next prime is 206154322136143. The reversal of 206154322136133 is 331631223451602.

It is not a de Polignac number, because 206154322136133 - 2⁴ = 206154322136117 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206154322136143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5050810 + ... + 20924132.

It is an arithmetic number, because the mean of its divisors is an integer number (9893906342496).

Almost surely, 2^{206154322136133} is an apocalyptic number.

It is an amenable number.

206154322136133 is a deficient number, since it is larger than the sum of its proper divisors (110450680823739).

206154322136133 is a wasteful number, since it uses less digits than its factorization.

206154322136133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15878185.

The product of its (nonzero) digits is 466560, while the sum is 42.

Adding to 206154322136133 its reverse (331631223451602), we get a palindrome (537785545587735).

The spelling of 206154322136133 in words is "two hundred six trillion, one hundred fifty-four billion, three hundred twenty-two million, one hundred thirty-six thousand, one hundred thirty-three".