51605106071 has 8 divisors (see below), whose sum is σ = 53274624000. Its totient is φ = 49935890520.

The previous prime is 51605106061. The next prime is 51605106097. The reversal of 51605106071 is 17060150615.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51605106071 - 2¹⁰ = 51605105047 is a prime.

It is a super-2 number, since 2×51605106071² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51605106061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 301130 + ... + 440328.

It is an arithmetic number, because the mean of its divisors is an integer number (6659328000).

Almost surely, 2^51605106071 is an apocalyptic number.

51605106071 is a deficient number, since it is larger than the sum of its proper divisors (1669517929).

51605106071 is a wasteful number, since it uses less digits than its factorization.

51605106071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151189.

The product of its (nonzero) digits is 6300, while the sum is 32.

Adding to 51605106071 its reverse (17060150615), we get a palindrome (68665256686).

The spelling of 51605106071 in words is "fifty-one billion, six hundred five million, one hundred six thousand, seventy-one".