51641024489 has 2 divisors, whose sum is σ = 51641024490. Its totient is φ = 51641024488.

The previous prime is 51641024471. The next prime is 51641024527. The reversal of 51641024489 is 98442014615.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39474934489 + 12166090000 = 198683^2 + 110300^2 .

It is a cyclic number.

It is not a de Polignac number, because 51641024489 - 2²⁴ = 51624247273 is a prime.

It is a super-2 number, since 2×51641024489² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (51641024419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25820512244 + 25820512245.

It is an arithmetic number, because the mean of its divisors is an integer number (25820512245).

Almost surely, 2^51641024489 is an apocalyptic number.

It is an amenable number.

51641024489 is a deficient number, since it is larger than the sum of its proper divisors (1).

51641024489 is an equidigital number, since it uses as much as digits as its factorization.

51641024489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 276480, while the sum is 44.

The spelling of 51641024489 in words is "fifty-one billion, six hundred forty-one million, twenty-four thousand, four hundred eighty-nine".