51043020353 has 16 divisors (see below), whose sum is σ = 58213640016. Its totient is φ = 44336885760.

The previous prime is 51043020317. The next prime is 51043020389. The reversal of 51043020353 is 35302034015.

51043020353 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51043020317) and next prime (51043020389).

It can be written as a sum of positive squares in 8 ways, for example, as 2459366464 + 48583653889 = 49592^2 + 220417^2 .

It is a cyclic number.

It is not a de Polignac number, because 51043020353 - 2⁶ = 51043020289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51043020313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1390313 + ... + 1426553.

It is an arithmetic number, because the mean of its divisors is an integer number (3638352501).

Almost surely, 2^51043020353 is an apocalyptic number.

It is an amenable number.

51043020353 is a deficient number, since it is larger than the sum of its proper divisors (7170619663).

51043020353 is a wasteful number, since it uses less digits than its factorization.

51043020353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42644.

The product of its (nonzero) digits is 5400, while the sum is 26.

Adding to 51043020353 its reverse (35302034015), we get a palindrome (86345054368).

The spelling of 51043020353 in words is "fifty-one billion, forty-three million, twenty thousand, three hundred fifty-three".