51435135331 has 2 divisors, whose sum is σ = 51435135332. Its totient is φ = 51435135330.

The previous prime is 51435135317. The next prime is 51435135337. The reversal of 51435135331 is 13353153415.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51435135331 is a prime.

It is a super-2 number, since 2×51435135331² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51435135337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25717567665 + 25717567666.

It is an arithmetic number, because the mean of its divisors is an integer number (25717567666).

Almost surely, 2^51435135331 is an apocalyptic number.

51435135331 is a deficient number, since it is larger than the sum of its proper divisors (1).

51435135331 is an equidigital number, since it uses as much as digits as its factorization.

51435135331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40500, while the sum is 34.

Adding to 51435135331 its reverse (13353153415), we get a palindrome (64788288746).

The spelling of 51435135331 in words is "fifty-one billion, four hundred thirty-five million, one hundred thirty-five thousand, three hundred thirty-one".