51666010615127 has 2 divisors, whose sum is σ = 51666010615128. Its totient is φ = 51666010615126.

The previous prime is 51666010615031. The next prime is 51666010615139. The reversal of 51666010615127 is 72151601066615.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51666010615127 - 2¹⁶ = 51666010549591 is a prime.

It is a super-2 number, since 2×51666010615127² (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 (51666010615627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25833005307563 + 25833005307564.

It is an arithmetic number, because the mean of its divisors is an integer number (25833005307564).

Almost surely, 2^{51666010615127} is an apocalyptic number.

51666010615127 is a deficient number, since it is larger than the sum of its proper divisors (1).

51666010615127 is an equidigital number, since it uses as much as digits as its factorization.

51666010615127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 453600, while the sum is 47.

The spelling of 51666010615127 in words is "fifty-one trillion, six hundred sixty-six billion, ten million, six hundred fifteen thousand, one hundred twenty-seven".