51513030013 has 8 divisors (see below), whose sum is σ = 51763795776. Its totient is φ = 51262327200.

The previous prime is 51513030001. The next prime is 51513030031. The reversal of 51513030013 is 31003031515.

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

It is a cyclic number.

It is not a de Polignac number, because 51513030013 - 2³³ = 42923095421 is a prime.

It is a super-3 number, since 3×51513030013³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51513030043) 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, 3190920 + ... + 3207022.

It is an arithmetic number, because the mean of its divisors is an integer number (6470474472).

Almost surely, 2^51513030013 is an apocalyptic number.

It is an amenable number.

51513030013 is a deficient number, since it is larger than the sum of its proper divisors (250765763).

51513030013 is a wasteful number, since it uses less digits than its factorization.

51513030013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31475.

The product of its (nonzero) digits is 675, while the sum is 22.

Adding to 51513030013 its reverse (31003031515), we get a palindrome (82516061528).

The spelling of 51513030013 in words is "fifty-one billion, five hundred thirteen million, thirty thousand, thirteen".