51773473345 has 12 divisors (see below), whose sum is σ = 68289640020. Its totient is φ = 37653434720.

The previous prime is 51773473313. The next prime is 51773473379. The reversal of 51773473345 is 54337437715.

It can be written as a sum of positive squares in 2 ways, for example, as 24508528704 + 27264944641 = 156552^2 + 165121^2 .

It is not a de Polignac number, because 51773473345 - 2⁵ = 51773473313 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42787390 + ... + 42788599.

It is an arithmetic number, because the mean of its divisors is an integer number (5690803335).

Almost surely, 2^51773473345 is an apocalyptic number.

51773473345 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51773473345 is a deficient number, since it is larger than the sum of its proper divisors (16516166675).

51773473345 is a wasteful number, since it uses less digits than its factorization.

51773473345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85576016 (or 85576005 counting only the distinct ones).

The product of its digits is 3704400, while the sum is 49.

The spelling of 51773473345 in words is "fifty-one billion, seven hundred seventy-three million, four hundred seventy-three thousand, three hundred forty-five".