206554123445 has 16 divisors (see below), whose sum is σ = 262147039680. Its totient is φ = 155804342400.

The previous prime is 206554123439. The next prime is 206554123459. The reversal of 206554123445 is 544321455602.

206554123445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 206554123445 - 2¹² = 206554119349 is a prime.

It is a super-5 number, since 5×206554123445⁵ (a number of 58 digits) contains 55555 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5132216 + ... + 5172305.

It is an arithmetic number, because the mean of its divisors is an integer number (16384189980).

Almost surely, 2^206554123445 is an apocalyptic number.

It is an amenable number.

206554123445 is a deficient number, since it is larger than the sum of its proper divisors (55592916235).

206554123445 is a wasteful number, since it uses less digits than its factorization.

206554123445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10304756.

The product of its (nonzero) digits is 576000, while the sum is 41.

The spelling of 206554123445 in words is "two hundred six billion, five hundred fifty-four million, one hundred twenty-three thousand, four hundred forty-five".