512123022505243 has 6 divisors (see below), whose sum is σ = 544019958163316. Its totient is φ = 481998138828192.

The previous prime is 512123022505223. The next prime is 512123022505247. The reversal of 512123022505243 is 342505220321215.

It is a de Polignac number, because none of the positive numbers 2^k-512123022505243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (512123022505247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 886025990205 + ... + 886025990782.

Almost surely, 2^{512123022505243} is an apocalyptic number.

512123022505243 is a deficient number, since it is larger than the sum of its proper divisors (31896935658073).

512123022505243 is a wasteful number, since it uses less digits than its factorization.

512123022505243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772051981021 (or 1772051981004 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 37.

Adding to 512123022505243 its reverse (342505220321215), we get a palindrome (854628242826458).

The spelling of 512123022505243 in words is "five hundred twelve trillion, one hundred twenty-three billion, twenty-two million, five hundred five thousand, two hundred forty-three".