51535421113 has 8 divisors (see below), whose sum is σ = 56222946720. Its totient is φ = 46848310080.

The previous prime is 51535421057. The next prime is 51535421173. The reversal of 51535421113 is 31112453515.

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

It is a de Polignac number, because none of the positive numbers 2^k-51535421113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51535421173) 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, 193281 + ... + 374737.

It is an arithmetic number, because the mean of its divisors is an integer number (7027868340).

Almost surely, 2^51535421113 is an apocalyptic number.

It is an amenable number.

51535421113 is a deficient number, since it is larger than the sum of its proper divisors (4687525607).

51535421113 is a wasteful number, since it uses less digits than its factorization.

51535421113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207287.

The product of its digits is 9000, while the sum is 31.

Adding to 51535421113 its reverse (31112453515), we get a palindrome (82647874628).

The spelling of 51535421113 in words is "fifty-one billion, five hundred thirty-five million, four hundred twenty-one thousand, one hundred thirteen".