51251424713 has 16 divisors (see below), whose sum is σ = 54856383120. Its totient is φ = 47713536000.

The previous prime is 51251424683. The next prime is 51251424737. The reversal of 51251424713 is 31742415215.

It can be written as a sum of positive squares in 8 ways, for example, as 24272705209 + 26978719504 = 155797^2 + 164252^2 .

It is a cyclic number.

It is not a de Polignac number, because 51251424713 - 2¹⁶ = 51251359177 is a prime.

It is a super-2 number, since 2×51251424713² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51251424743) 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, 1090643 + ... + 1136663.

It is an arithmetic number, because the mean of its divisors is an integer number (3428523945).

Almost surely, 2^51251424713 is an apocalyptic number.

It is an amenable number.

51251424713 is a deficient number, since it is larger than the sum of its proper divisors (3604958407).

51251424713 is a wasteful number, since it uses less digits than its factorization.

51251424713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46748.

The product of its digits is 33600, while the sum is 35.

Adding to 51251424713 its reverse (31742415215), we get a palindrome (82993839928).

The spelling of 51251424713 in words is "fifty-one billion, two hundred fifty-one million, four hundred twenty-four thousand, seven hundred thirteen".