51736507705 has 8 divisors (see below), whose sum is σ = 62085052872. Its totient is φ = 41388377088.

The previous prime is 51736507687. The next prime is 51736507721. The reversal of 51736507705 is 50770563715.

It can be written as a sum of positive squares in 4 ways, for example, as 33243499584 + 18493008121 = 182328^2 + 135989^2 .

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 51736507705 - 2¹³ = 51736499513 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 357337 + ... + 480793.

It is an arithmetic number, because the mean of its divisors is an integer number (7760631609).

Almost surely, 2^51736507705 is an apocalyptic number.

It is an amenable number.

51736507705 is a deficient number, since it is larger than the sum of its proper divisors (10348545167).

51736507705 is a wasteful number, since it uses less digits than its factorization.

51736507705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207275.

The product of its (nonzero) digits is 771750, while the sum is 46.

The spelling of 51736507705 in words is "fifty-one billion, seven hundred thirty-six million, five hundred seven thousand, seven hundred five".