51601325652171 has 12 divisors (see below), whose sum is σ = 74774911345680. Its totient is φ = 34290269992080.

The previous prime is 51601325652133. The next prime is 51601325652181. The reversal of 51601325652171 is 17125652310615.

51601325652171 is a `hidden beast` number, since 5 + 1 + 6 + 0 + 1 + 3 + 2 + 56 + 521 + 71 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-51601325652171 is a prime.

It is a super-2 number, since 2×51601325652171² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51601325652181) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9217811716 + ... + 9217817313.

It is an arithmetic number, because the mean of its divisors is an integer number (6231242612140).

Almost surely, 2^{51601325652171} is an apocalyptic number.

51601325652171 is a deficient number, since it is larger than the sum of its proper divisors (23173585693509).

51601325652171 is a wasteful number, since it uses less digits than its factorization.

51601325652171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18435629346 (or 18435629343 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 45.

Adding to 51601325652171 its reverse (17125652310615), we get a palindrome (68726977962786).

The spelling of 51601325652171 in words is "fifty-one trillion, six hundred one billion, three hundred twenty-five million, six hundred fifty-two thousand, one hundred seventy-one".