51234004665329 has 2 divisors, whose sum is σ = 51234004665330. Its totient is φ = 51234004665328.

The previous prime is 51234004665191. The next prime is 51234004665419. The reversal of 51234004665329 is 92356640043215.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48480263551729 + 2753741113600 = 6962777^2 + 1659440^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51234004665329 is a prime.

It is not a weakly prime, because it can be changed into another prime (51234004665029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25617002332664 + 25617002332665.

It is an arithmetic number, because the mean of its divisors is an integer number (25617002332665).

Almost surely, 2^{51234004665329} is an apocalyptic number.

It is an amenable number.

51234004665329 is a deficient number, since it is larger than the sum of its proper divisors (1).

51234004665329 is an equidigital number, since it uses as much as digits as its factorization.

51234004665329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4665600, while the sum is 50.

The spelling of 51234004665329 in words is "fifty-one trillion, two hundred thirty-four billion, four million, six hundred sixty-five thousand, three hundred twenty-nine".