51118660261771 has 8 divisors (see below), whose sum is σ = 52094527958880. Its totient is φ = 50143213478592.

The previous prime is 51118660261759. The next prime is 51118660261777. The reversal of 51118660261771 is 17716206681115.

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 51118660261771 - 2¹³ = 51118660253579 is a prime.

It is a super-2 number, since 2×51118660261771² (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 (51118660261777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104983266 + ... + 105469063.

It is an arithmetic number, because the mean of its divisors is an integer number (6511815994860).

Almost surely, 2^{51118660261771} is an apocalyptic number.

51118660261771 is a deficient number, since it is larger than the sum of its proper divisors (975867697109).

51118660261771 is a wasteful number, since it uses less digits than its factorization.

51118660261771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210456965.

The product of its (nonzero) digits is 846720, while the sum is 52.

The spelling of 51118660261771 in words is "fifty-one trillion, one hundred eighteen billion, six hundred sixty million, two hundred sixty-one thousand, seven hundred seventy-one".