51215344027 has 2 divisors, whose sum is σ = 51215344028. Its totient is φ = 51215344026.

The previous prime is 51215343997. The next prime is 51215344031. The reversal of 51215344027 is 72044351215.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51215344027 - 2²³ = 51206955419 is a prime.

It is a super-2 number, since 2×51215344027² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51215343983 and 51215344001.

It is not a weakly prime, because it can be changed into another prime (51215344057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25607672013 + 25607672014.

It is an arithmetic number, because the mean of its divisors is an integer number (25607672014).

Almost surely, 2^51215344027 is an apocalyptic number.

51215344027 is a deficient number, since it is larger than the sum of its proper divisors (1).

51215344027 is an equidigital number, since it uses as much as digits as its factorization.

51215344027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 34.

The spelling of 51215344027 in words is "fifty-one billion, two hundred fifteen million, three hundred forty-four thousand, twenty-seven".