51374347354117 has 2 divisors, whose sum is σ = 51374347354118. Its totient is φ = 51374347354116.

The previous prime is 51374347354067. The next prime is 51374347354133. The reversal of 51374347354117 is 71145374347315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38455203903076 + 12919143451041 = 6201226^2 + 3594321^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51374347354117 is a prime.

It is a super-2 number, since 2×51374347354117² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51374317354117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25687173677058 + 25687173677059.

It is an arithmetic number, because the mean of its divisors is an integer number (25687173677059).

Almost surely, 2^{51374347354117} is an apocalyptic number.

It is an amenable number.

51374347354117 is a deficient number, since it is larger than the sum of its proper divisors (1).

51374347354117 is an equidigital number, since it uses as much as digits as its factorization.

51374347354117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14817600, while the sum is 55.

The spelling of 51374347354117 in words is "fifty-one trillion, three hundred seventy-four billion, three hundred forty-seven million, three hundred fifty-four thousand, one hundred seventeen".