512321445564461 has 8 divisors (see below), whose sum is σ = 552814738004760. Its totient is φ = 471983003191872.

The previous prime is 512321445564427. The next prime is 512321445564469. The reversal of 512321445564461 is 164465544123215.

It can be written as a sum of positive squares in 4 ways, for example, as 7746308001961 + 504575137562500 = 2783219^2 + 22462750^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-512321445564461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512321445564469) 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, 38712510050 + ... + 38712523283.

It is an arithmetic number, because the mean of its divisors is an integer number (69101842250595).

Almost surely, 2^{512321445564461} is an apocalyptic number.

It is an amenable number.

512321445564461 is a deficient number, since it is larger than the sum of its proper divisors (40493292440299).

512321445564461 is a wasteful number, since it uses less digits than its factorization.

512321445564461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77425033855.

The product of its digits is 13824000, while the sum is 53.

Adding to 512321445564461 its reverse (164465544123215), we get a palindrome (676786989687676).

The spelling of 512321445564461 in words is "five hundred twelve trillion, three hundred twenty-one billion, four hundred forty-five million, five hundred sixty-four thousand, four hundred sixty-one".