206454045126 has 128 divisors (see below), whose sum is σ = 494195281920. Its totient is φ = 56277292032.

The previous prime is 206454045071. The next prime is 206454045137. The reversal of 206454045126 is 621540454602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16419370 + ... + 16431938.

It is an arithmetic number, because the mean of its divisors is an integer number (3860900640).

Almost surely, 2^206454045126 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206454045126, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247097640960).

206454045126 is an abundant number, since it is smaller than the sum of its proper divisors (287741236794).

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

206454045126 is a wasteful number, since it uses less digits than its factorization.

206454045126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12838.

The product of its (nonzero) digits is 230400, while the sum is 39.

Adding to 206454045126 its reverse (621540454602), we get a palindrome (827994499728).

The spelling of 206454045126 in words is "two hundred six billion, four hundred fifty-four million, forty-five thousand, one hundred twenty-six".