512011025263621 has 16 divisors (see below), whose sum is σ = 551515943266288. Its totient is φ = 472523178009600.

The previous prime is 512011025263609. The next prime is 512011025263693. The reversal of 512011025263621 is 126362520110215.

It can be written as a sum of positive squares in 8 ways, for example, as 2863842059521 + 509147183204100 = 1692289^2 + 22564290^2 .

It is a cyclic number.

It is not a de Polignac number, because 512011025263621 - 2⁵ = 512011025263589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512011025263021) 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 15 ways as a sum of consecutive naturals, for example, 2548727101 + ... + 2548927981.

It is an arithmetic number, because the mean of its divisors is an integer number (34469746454143).

Almost surely, 2^{512011025263621} is an apocalyptic number.

It is an amenable number.

512011025263621 is a deficient number, since it is larger than the sum of its proper divisors (39504918002667).

512011025263621 is a wasteful number, since it uses less digits than its factorization.

512011025263621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242392.

The product of its (nonzero) digits is 43200, while the sum is 37.

Adding to 512011025263621 its reverse (126362520110215), we get a palindrome (638373545373836).

The spelling of 512011025263621 in words is "five hundred twelve trillion, eleven billion, twenty-five million, two hundred sixty-three thousand, six hundred twenty-one".