51025743745 has 8 divisors (see below), whose sum is σ = 63342302760. Its totient is φ = 39412988160.

The previous prime is 51025743733. The next prime is 51025743767. The reversal of 51025743745 is 54734752015.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 22413682944 + 28612060801 = 149712^2 + 169151^2 .

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

It is not a de Polignac number, because 51025743745 - 2⁷ = 51025743617 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175950696 + ... + 175950985.

It is an arithmetic number, because the mean of its divisors is an integer number (7917787845).

Almost surely, 2^51025743745 is an apocalyptic number.

It is an amenable number.

51025743745 is a deficient number, since it is larger than the sum of its proper divisors (12316559015).

51025743745 is a wasteful number, since it uses less digits than its factorization.

51025743745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351901715.

The product of its (nonzero) digits is 588000, while the sum is 43.

The spelling of 51025743745 in words is "fifty-one billion, twenty-five million, seven hundred forty-three thousand, seven hundred forty-five".