51010040020505 has 8 divisors (see below), whose sum is σ = 61212477840000. Its totient is φ = 40807745472816.

The previous prime is 51010040020477. The next prime is 51010040020519. The reversal of 51010040020505 is 50502004001015.

It is a happy number.

51010040020505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51010040020505 - 2¹⁰ = 51010040019481 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 35033105 + ... + 36460094.

It is an arithmetic number, because the mean of its divisors is an integer number (7651559730000).

Almost surely, 2^{51010040020505} is an apocalyptic number.

It is an amenable number.

51010040020505 is a deficient number, since it is larger than the sum of its proper divisors (10202437819495).

51010040020505 is a wasteful number, since it uses less digits than its factorization.

51010040020505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71635903.

The product of its (nonzero) digits is 1000, while the sum is 23.

The spelling of 51010040020505 in words is "fifty-one trillion, ten billion, forty million, twenty thousand, five hundred five".