51544879259 has 2 divisors, whose sum is σ = 51544879260. Its totient is φ = 51544879258.

The previous prime is 51544879249. The next prime is 51544879297. The reversal of 51544879259 is 95297844515.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51544879259 - 2¹² = 51544875163 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51544879198 and 51544879207.

It is not a weakly prime, because it can be changed into another prime (51544879249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25772439629 + 25772439630.

It is an arithmetic number, because the mean of its divisors is an integer number (25772439630).

Almost surely, 2^51544879259 is an apocalyptic number.

51544879259 is a deficient number, since it is larger than the sum of its proper divisors (1).

51544879259 is an equidigital number, since it uses as much as digits as its factorization.

51544879259 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144000, while the sum is 59.

The spelling of 51544879259 in words is "fifty-one billion, five hundred forty-four million, eight hundred seventy-nine thousand, two hundred fifty-nine".