51220514330564 has 12 divisors (see below), whose sum is σ = 89636129873724. Its totient is φ = 25610191509504.

The previous prime is 51220514330543. The next prime is 51220514330569. The reversal of 51220514330564 is 46503341502215.

It can be written as a sum of positive squares in 2 ways, for example, as 25170208728064 + 26050305602500 = 5016992^2 + 5103950^2 .

It is not an unprimeable number, because it can be changed into a prime (51220514330569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14637269 + ... + 17795804.

It is an arithmetic number, because the mean of its divisors is an integer number (7469677489477).

Almost surely, 2^{51220514330564} is an apocalyptic number.

It is an amenable number.

51220514330564 is a deficient number, since it is larger than the sum of its proper divisors (38415615543160).

51220514330564 is a wasteful number, since it uses less digits than its factorization.

51220514330564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32827894 (or 32827892 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 41.

Adding to 51220514330564 its reverse (46503341502215), we get a palindrome (97723855832779).

The spelling of 51220514330564 in words is "fifty-one trillion, two hundred twenty billion, five hundred fourteen million, three hundred thirty thousand, five hundred sixty-four".