51515066673 has 24 divisors (see below), whose sum is σ = 85051594368. Its totient is φ = 29433425472.

The previous prime is 51515066641. The next prime is 51515066683. The reversal of 51515066673 is 37666051515.

It is not a de Polignac number, because 51515066673 - 2⁵ = 51515066641 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51515066623) 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 in 23 ways as a sum of consecutive naturals, for example, 489940 + ... + 585722.

It is an arithmetic number, because the mean of its divisors is an integer number (3543816432).

Almost surely, 2^51515066673 is an apocalyptic number.

It is an amenable number.

51515066673 is a deficient number, since it is larger than the sum of its proper divisors (33536527695).

51515066673 is a wasteful number, since it uses less digits than its factorization.

51515066673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104333 (or 104330 counting only the distinct ones).

The product of its (nonzero) digits is 567000, while the sum is 45.

The spelling of 51515066673 in words is "fifty-one billion, five hundred fifteen million, sixty-six thousand, six hundred seventy-three".