51960409705 has 4 divisors (see below), whose sum is σ = 62352491652. Its totient is φ = 41568327760.

The previous prime is 51960409693. The next prime is 51960409757. The reversal of 51960409705 is 50790406915.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26881569936 + 25078839769 = 163956^2 + 158363^2 .

It is not a de Polignac number, because 51960409705 - 2¹³ = 51960401513 is a prime.

It is a super-2 number, since 2×51960409705² (a number of 22 digits) contains 22 as substring.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 5196040966 + ... + 5196040975.

It is an arithmetic number, because the mean of its divisors is an integer number (15588122913).

Almost surely, 2^51960409705 is an apocalyptic number.

It is an amenable number.

51960409705 is a deficient number, since it is larger than the sum of its proper divisors (10392081947).

51960409705 is a wasteful number, since it uses less digits than its factorization.

51960409705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10392081946.

The product of its (nonzero) digits is 340200, while the sum is 46.

The spelling of 51960409705 in words is "fifty-one billion, nine hundred sixty million, four hundred nine thousand, seven hundred five".