51331434305 has 16 divisors (see below), whose sum is σ = 61883377920. Its totient is φ = 40874832768.

The previous prime is 51331434299. The next prime is 51331434307. The reversal of 51331434305 is 50343413315.

It is a cyclic number.

It is not a de Polignac number, because 51331434305 - 2¹² = 51331430209 is a prime.

It is a super-2 number, since 2×51331434305² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51331434307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4560014 + ... + 4571256.

It is an arithmetic number, because the mean of its divisors is an integer number (3867711120).

Almost surely, 2^51331434305 is an apocalyptic number.

It is an amenable number.

51331434305 is a deficient number, since it is larger than the sum of its proper divisors (10551943615).

51331434305 is a wasteful number, since it uses less digits than its factorization.

51331434305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15400.

The product of its (nonzero) digits is 32400, while the sum is 32.

The spelling of 51331434305 in words is "fifty-one billion, three hundred thirty-one million, four hundred thirty-four thousand, three hundred five".