512221500252353 has 4 divisors (see below), whose sum is σ = 512360276062128. Its totient is φ = 512082724442580.

The previous prime is 512221500252347. The next prime is 512221500252373. The reversal of 512221500252353 is 353252005122215.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 512221500252353 - 2²⁸ = 512221231816897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (512221500252373) 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 3 ways as a sum of consecutive naturals, for example, 69387899351 + ... + 69387906732.

It is an arithmetic number, because the mean of its divisors is an integer number (128090069015532).

Almost surely, 2^{512221500252353} is an apocalyptic number.

It is an amenable number.

512221500252353 is a deficient number, since it is larger than the sum of its proper divisors (138775809775).

512221500252353 is a wasteful number, since it uses less digits than its factorization.

512221500252353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138775809774.

The product of its (nonzero) digits is 180000, while the sum is 38.

Adding to 512221500252353 its reverse (353252005122215), we get a palindrome (865473505374568).

The spelling of 512221500252353 in words is "five hundred twelve trillion, two hundred twenty-one billion, five hundred million, two hundred fifty-two thousand, three hundred fifty-three".