51471523470247 has 4 divisors (see below), whose sum is σ = 51481193121160. Its totient is φ = 51461853819336.

The previous prime is 51471523470221. The next prime is 51471523470251. The reversal of 51471523470247 is 74207432517415.

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 51471523470247 - 2⁷ = 51471523470119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51471523470194 and 51471523470203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51471523470847) 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, 4834817472 + ... + 4834828117.

It is an arithmetic number, because the mean of its divisors is an integer number (12870298280290).

Almost surely, 2^{51471523470247} is an apocalyptic number.

51471523470247 is a deficient number, since it is larger than the sum of its proper divisors (9669650913).

51471523470247 is an equidigital number, since it uses as much as digits as its factorization.

51471523470247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9669650912.

The product of its (nonzero) digits is 6585600, while the sum is 52.

The spelling of 51471523470247 in words is "fifty-one trillion, four hundred seventy-one billion, five hundred twenty-three million, four hundred seventy thousand, two hundred forty-seven".