51404346173 has 16 divisors (see below), whose sum is σ = 55766563776. Its totient is φ = 47193780480.

The previous prime is 51404346143. The next prime is 51404346197. The reversal of 51404346173 is 37164340415.

It is a cyclic number.

It is not a de Polignac number, because 51404346173 - 2¹⁰ = 51404345149 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51404346143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 519578 + ... + 610548.

It is an arithmetic number, because the mean of its divisors is an integer number (3485410236).

Almost surely, 2^51404346173 is an apocalyptic number.

It is an amenable number.

51404346173 is a deficient number, since it is larger than the sum of its proper divisors (4362217603).

51404346173 is a wasteful number, since it uses less digits than its factorization.

51404346173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91804.

The product of its (nonzero) digits is 120960, while the sum is 38.

Adding to 51404346173 its reverse (37164340415), we get a palindrome (88568686588).

The spelling of 51404346173 in words is "fifty-one billion, four hundred four million, three hundred forty-six thousand, one hundred seventy-three".