51949940617577 has 8 divisors (see below), whose sum is σ = 52199362780416. Its totient is φ = 51700884984832.

The previous prime is 51949940617559. The next prime is 51949940617591. The reversal of 51949940617577 is 77571604994915.

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 51949940617577 - 2⁸ = 51949940617321 is a prime.

It is a super-2 number, since 2×51949940617577² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51949940617777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91348373 + ... + 91915314.

It is an arithmetic number, because the mean of its divisors is an integer number (6524920347552).

Almost surely, 2^{51949940617577} is an apocalyptic number.

It is an amenable number.

51949940617577 is a deficient number, since it is larger than the sum of its proper divisors (249422162839).

51949940617577 is a wasteful number, since it uses less digits than its factorization.

51949940617577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183265047.

The product of its (nonzero) digits is 600112800, while the sum is 74.

The spelling of 51949940617577 in words is "fifty-one trillion, nine hundred forty-nine billion, nine hundred forty million, six hundred seventeen thousand, five hundred seventy-seven".