51335097513 has 24 divisors (see below), whose sum is σ = 78578866368. Its totient is φ = 29202203232.

The previous prime is 51335097493. The next prime is 51335097529. The reversal of 51335097513 is 31579053315.

It is not a de Polignac number, because 51335097513 - 2⁵ = 51335097481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51335097113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1019731 + ... + 1068887.

It is an arithmetic number, because the mean of its divisors is an integer number (3274119432).

Almost surely, 2^51335097513 is an apocalyptic number.

It is an amenable number.

51335097513 is a deficient number, since it is larger than the sum of its proper divisors (27243768855).

51335097513 is an equidigital number, since it uses as much as digits as its factorization.

51335097513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49613 (or 49390 counting only the distinct ones).

The product of its (nonzero) digits is 212625, while the sum is 42.

The spelling of 51335097513 in words is "fifty-one billion, three hundred thirty-five million, ninety-seven thousand, five hundred thirteen".