51647164727 has 8 divisors (see below), whose sum is σ = 51776354064. Its totient is φ = 51518092608.

The previous prime is 51647164703. The next prime is 51647164733. The reversal of 51647164727 is 72746174615.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51647164727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51647164747) 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, 888653 + ... + 944985.

It is an arithmetic number, because the mean of its divisors is an integer number (6472044258).

Almost surely, 2^51647164727 is an apocalyptic number.

51647164727 is a deficient number, since it is larger than the sum of its proper divisors (129189337).

51647164727 is a wasteful number, since it uses less digits than its factorization.

51647164727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58609.

The product of its digits is 1975680, while the sum is 50.

The spelling of 51647164727 in words is "fifty-one billion, six hundred forty-seven million, one hundred sixty-four thousand, seven hundred twenty-seven".