51017471531359 has 4 divisors (see below), whose sum is σ = 51161996946816. Its totient is φ = 50872946115904.

The previous prime is 51017471531347. The next prime is 51017471531399. The reversal of 51017471531359 is 95313517471015.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51017471531359 - 2³¹ = 51015324047711 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 (51017471531309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72262707199 + ... + 72262707904.

It is an arithmetic number, because the mean of its divisors is an integer number (12790499236704).

Almost surely, 2^{51017471531359} is an apocalyptic number.

51017471531359 is a deficient number, since it is larger than the sum of its proper divisors (144525415457).

51017471531359 is a wasteful number, since it uses less digits than its factorization.

51017471531359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144525415456.

The product of its (nonzero) digits is 1984500, while the sum is 52.

The spelling of 51017471531359 in words is "fifty-one trillion, seventeen billion, four hundred seventy-one million, five hundred thirty-one thousand, three hundred fifty-nine".