51116055115171 has 2 divisors, whose sum is σ = 51116055115172. Its totient is φ = 51116055115170.

The previous prime is 51116055115157. The next prime is 51116055115201. The reversal of 51116055115171 is 17151155061115.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51116055115171 - 2³³ = 51107465180579 is a prime.

It is a super-2 number, since 2×51116055115171² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51116055155171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25558027557585 + 25558027557586.

It is an arithmetic number, because the mean of its divisors is an integer number (25558027557586).

Almost surely, 2^{51116055115171} is an apocalyptic number.

51116055115171 is a deficient number, since it is larger than the sum of its proper divisors (1).

51116055115171 is an equidigital number, since it uses as much as digits as its factorization.

51116055115171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26250, while the sum is 40.

The spelling of 51116055115171 in words is "fifty-one trillion, one hundred sixteen billion, fifty-five million, one hundred fifteen thousand, one hundred seventy-one".