51242424513 has 32 divisors (see below), whose sum is σ = 79928318976. Its totient is φ = 28590141888.

The previous prime is 51242424481. The next prime is 51242424517. The reversal of 51242424513 is 31542424215.

51242424513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51242424513 - 2⁵ = 51242424481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51242424517) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2992131 + ... + 3009207.

It is an arithmetic number, because the mean of its divisors is an integer number (2497759968).

Almost surely, 2^51242424513 is an apocalyptic number.

It is an amenable number.

51242424513 is a deficient number, since it is larger than the sum of its proper divisors (28685894463).

51242424513 is a wasteful number, since it uses less digits than its factorization.

51242424513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20453.

The product of its digits is 38400, while the sum is 33.

Adding to 51242424513 its reverse (31542424215), we get a palindrome (82784848728).

The spelling of 51242424513 in words is "fifty-one billion, two hundred forty-two million, four hundred twenty-four thousand, five hundred thirteen".