513450220415344 has 20 divisors (see below), whose sum is σ = 994811810738200. Its totient is φ = 256724591837760.

The previous prime is 513450220415333. The next prime is 513450220415347. The reversal of 513450220415344 is 443514022054315.

It is a happy number.

It is a super-2 number, since 2×513450220415344² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 513450220415344.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513450220415347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24162987 + ... + 40134154.

It is an arithmetic number, because the mean of its divisors is an integer number (49740590536910).

Almost surely, 2^{513450220415344} is an apocalyptic number.

It is an amenable number.

513450220415344 is a deficient number, since it is larger than the sum of its proper divisors (481361590322856).

513450220415344 is a wasteful number, since it uses less digits than its factorization.

513450220415344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64796248 (or 64796242 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 43.

Adding to 513450220415344 its reverse (443514022054315), we get a palindrome (956964242469659).

The spelling of 513450220415344 in words is "five hundred thirteen trillion, four hundred fifty billion, two hundred twenty million, four hundred fifteen thousand, three hundred forty-four".