51440253339 has 16 divisors (see below), whose sum is σ = 69287531040. Its totient is φ = 33943449600.

The previous prime is 51440253299. The next prime is 51440253377. The reversal of 51440253339 is 93335204415.

It is not a de Polignac number, because 51440253339 - 2⁷ = 51440253211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51440253297 and 51440253306.

It is not an unprimeable number, because it can be changed into a prime (51440251339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1022917 + ... + 1072025.

It is an arithmetic number, because the mean of its divisors is an integer number (4330470690).

Almost surely, 2^51440253339 is an apocalyptic number.

51440253339 is a deficient number, since it is larger than the sum of its proper divisors (17847277701).

51440253339 is a wasteful number, since it uses less digits than its factorization.

51440253339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52670.

The product of its (nonzero) digits is 194400, while the sum is 39.

The spelling of 51440253339 in words is "fifty-one billion, four hundred forty million, two hundred fifty-three thousand, three hundred thirty-nine".