51368412742473 has 4 divisors (see below), whose sum is σ = 68491216989968. Its totient is φ = 34245608494980.

The previous prime is 51368412742453. The next prime is 51368412742501. The reversal of 51368412742473 is 37424721486315.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 51368412742473 - 2⁵ = 51368412742441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51368412742403) 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, 8561402123743 + ... + 8561402123748.

It is an arithmetic number, because the mean of its divisors is an integer number (17122804247492).

Almost surely, 2^{51368412742473} is an apocalyptic number.

It is an amenable number.

51368412742473 is a deficient number, since it is larger than the sum of its proper divisors (17122804247495).

51368412742473 is a wasteful number, since it uses less digits than its factorization.

51368412742473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17122804247494.

The product of its digits is 27095040, while the sum is 57.

The spelling of 51368412742473 in words is "fifty-one trillion, three hundred sixty-eight billion, four hundred twelve million, seven hundred forty-two thousand, four hundred seventy-three".