513222420645660 has 96 divisors (see below), whose sum is σ = 1567664831577600. Its totient is φ = 124417269264640.

The previous prime is 513222420645629. The next prime is 513222420645691. The reversal of 513222420645660 is 66546024222315.

It is an interprime number because it is at equal distance from previous prime (513222420645629) and next prime (513222420645691).

It is a super-2 number, since 2×513222420645660² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

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 in 31 ways as a sum of consecutive naturals, for example, 481081726 + ... + 482147354.

It is an arithmetic number, because the mean of its divisors is an integer number (16329841995600).

Almost surely, 2^{513222420645660} is an apocalyptic number.

It is an amenable number.

513222420645660 is an abundant number, since it is smaller than the sum of its proper divisors (1054442410931940).

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

513222420645660 is a wasteful number, since it uses less digits than its factorization.

513222420645660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1795371 (or 1795369 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 48.

Adding to 513222420645660 its reverse (66546024222315), we get a palindrome (579768444867975).

The spelling of 513222420645660 in words is "five hundred thirteen trillion, two hundred twenty-two billion, four hundred twenty million, six hundred forty-five thousand, six hundred sixty".