51395691071 has 8 divisors (see below), whose sum is σ = 51515708400. Its totient is φ = 51275717248.

The previous prime is 51395691059. The next prime is 51395691079. The reversal of 51395691071 is 17019659315.

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-51395691071 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 (51395691079) 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, 4126265 + ... + 4138701.

It is an arithmetic number, because the mean of its divisors is an integer number (6439463550).

Almost surely, 2^51395691071 is an apocalyptic number.

51395691071 is a deficient number, since it is larger than the sum of its proper divisors (120017329).

51395691071 is a wasteful number, since it uses less digits than its factorization.

51395691071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21753.

The product of its (nonzero) digits is 255150, while the sum is 47.

The spelling of 51395691071 in words is "fifty-one billion, three hundred ninety-five million, six hundred ninety-one thousand, seventy-one".