51234115013 has 8 divisors (see below), whose sum is σ = 51279180120. Its totient is φ = 51189073920.

The previous prime is 51234114989. The next prime is 51234115039. The reversal of 51234115013 is 31051143215.

It can be written as a sum of positive squares in 4 ways, for example, as 12736928164 + 38497186849 = 112858^2 + 196207^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51234115013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51234115043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9197093 + ... + 9202661.

It is an arithmetic number, because the mean of its divisors is an integer number (6409897515).

Almost surely, 2^51234115013 is an apocalyptic number.

It is an amenable number.

51234115013 is a deficient number, since it is larger than the sum of its proper divisors (45065107).

51234115013 is a wasteful number, since it uses less digits than its factorization.

51234115013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12007.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 51234115013 its reverse (31051143215), we get a palindrome (82285258228).

The spelling of 51234115013 in words is "fifty-one billion, two hundred thirty-four million, one hundred fifteen thousand, thirteen".