51512003004243 has 8 divisors (see below), whose sum is σ = 72722827770768. Its totient is φ = 32321256786944.

The previous prime is 51512003004173. The next prime is 51512003004263. The reversal of 51512003004243 is 34240030021515.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51512003004243 - 2⁹ = 51512003003731 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51512003004243.

It is not an unprimeable number, because it can be changed into a prime (51512003004263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505019637246 + ... + 505019637347.

It is an arithmetic number, because the mean of its divisors is an integer number (9090353471346).

Almost surely, 2^{51512003004243} is an apocalyptic number.

51512003004243 is a deficient number, since it is larger than the sum of its proper divisors (21210824766525).

51512003004243 is a wasteful number, since it uses less digits than its factorization.

51512003004243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010039274613.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 51512003004243 its reverse (34240030021515), we get a palindrome (85752033025758).

The spelling of 51512003004243 in words is "fifty-one trillion, five hundred twelve billion, three million, four thousand, two hundred forty-three".