51544502742871 has 2 divisors, whose sum is σ = 51544502742872. Its totient is φ = 51544502742870.

The previous prime is 51544502742851. The next prime is 51544502742893. The reversal of 51544502742871 is 17824720544515.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51544502742871 - 2⁵ = 51544502742839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51544502742851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25772251371435 + 25772251371436.

It is an arithmetic number, because the mean of its divisors is an integer number (25772251371436).

Almost surely, 2^{51544502742871} is an apocalyptic number.

51544502742871 is a deficient number, since it is larger than the sum of its proper divisors (1).

51544502742871 is an equidigital number, since it uses as much as digits as its factorization.

51544502742871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12544000, while the sum is 55.

The spelling of 51544502742871 in words is "fifty-one trillion, five hundred forty-four billion, five hundred two million, seven hundred forty-two thousand, eight hundred seventy-one".