512321445603420 has 24 divisors (see below), whose sum is σ = 1434500047689744. Its totient is φ = 136619052160896.

The previous prime is 512321445603419. The next prime is 512321445603421. The reversal of 512321445603420 is 24306544123215.

It is an interprime number because it is at equal distance from previous prime (512321445603419) and next prime (512321445603421).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512321445603421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4269345379969 + ... + 4269345380088.

It is an arithmetic number, because the mean of its divisors is an integer number (59770835320406).

Almost surely, 2^{512321445603420} is an apocalyptic number.

It is an amenable number.

512321445603420 is an abundant number, since it is smaller than the sum of its proper divisors (922178602086324).

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

512321445603420 is a wasteful number, since it uses less digits than its factorization.

512321445603420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8538690760069 (or 8538690760067 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 42.

Adding to 512321445603420 its reverse (24306544123215), we get a palindrome (536627989726635).

The spelling of 512321445603420 in words is "five hundred twelve trillion, three hundred twenty-one billion, four hundred forty-five million, six hundred three thousand, four hundred twenty".