51342502505 has 32 divisors (see below), whose sum is σ = 71350640640. Its totient is φ = 34737842880.

The previous prime is 51342502447. The next prime is 51342502543. The reversal of 51342502505 is 50520524315.

It is not a de Polignac number, because 51342502505 - 2⁸ = 51342502249 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4935860 + ... + 4946250.

It is an arithmetic number, because the mean of its divisors is an integer number (2229707520).

Almost surely, 2^51342502505 is an apocalyptic number.

It is an amenable number.

51342502505 is a deficient number, since it is larger than the sum of its proper divisors (20008138135).

51342502505 is a wasteful number, since it uses less digits than its factorization.

51342502505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12269.

The product of its (nonzero) digits is 30000, while the sum is 32.

The spelling of 51342502505 in words is "fifty-one billion, three hundred forty-two million, five hundred two thousand, five hundred five".