51512643326204 has 12 divisors (see below), whose sum is σ = 90285176554104. Its totient is φ = 25716878596464.

The previous prime is 51512643326197. The next prime is 51512643326213. The reversal of 51512643326204 is 40262334621515.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9860763722 + ... + 9860768945.

It is an arithmetic number, because the mean of its divisors is an integer number (7523764712842).

Almost surely, 2^{51512643326204} is an apocalyptic number.

It is an amenable number.

51512643326204 is a deficient number, since it is larger than the sum of its proper divisors (38772533227900).

51512643326204 is a wasteful number, since it uses less digits than its factorization.

51512643326204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19721533324 (or 19721533322 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 44.

Adding to 51512643326204 its reverse (40262334621515), we get a palindrome (91774977947719).

The spelling of 51512643326204 in words is "fifty-one trillion, five hundred twelve billion, six hundred forty-three million, three hundred twenty-six thousand, two hundred four".