513621475144 has 8 divisors (see below), whose sum is σ = 963040265910. Its totient is φ = 256810737568.

The previous prime is 513621475097. The next prime is 513621475261. The reversal of 513621475144 is 441574126315.

It can be written as a sum of positive squares in only one way, i.e., 283353936100 + 230267539044 = 532310^2 + 479862^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 513621475144.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 32101342189 + ... + 32101342204.

Almost surely, 2^513621475144 is an apocalyptic number.

It is an amenable number.

513621475144 is a deficient number, since it is larger than the sum of its proper divisors (449418790766).

513621475144 is a wasteful number, since it uses less digits than its factorization.

513621475144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64202684399 (or 64202684395 counting only the distinct ones).

The product of its digits is 403200, while the sum is 43.

The spelling of 513621475144 in words is "five hundred thirteen billion, six hundred twenty-one million, four hundred seventy-five thousand, one hundred forty-four".