51344256427 has 4 divisors (see below), whose sum is σ = 51350585400. Its totient is φ = 51337927456.

The previous prime is 51344256401. The next prime is 51344256473. The reversal of 51344256427 is 72465244315.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51344256427 - 2³⁵ = 16984518059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51344256497) 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, 3152302 + ... + 3168547.

It is an arithmetic number, because the mean of its divisors is an integer number (12837646350).

Almost surely, 2^51344256427 is an apocalyptic number.

51344256427 is a deficient number, since it is larger than the sum of its proper divisors (6328973).

51344256427 is an equidigital number, since it uses as much as digits as its factorization.

51344256427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6328972.

The product of its digits is 806400, while the sum is 43.

The spelling of 51344256427 in words is "fifty-one billion, three hundred forty-four million, two hundred fifty-six thousand, four hundred twenty-seven".