51609441337 has 2 divisors, whose sum is σ = 51609441338. Its totient is φ = 51609441336.

The previous prime is 51609441283. The next prime is 51609441341. The reversal of 51609441337 is 73314490615.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39977603136 + 11631838201 = 199944^2 + 107851^2 .

It is a cyclic number.

It is not a de Polignac number, because 51609441337 - 2²³ = 51601052729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51609441293 and 51609441302.

It is not a weakly prime, because it can be changed into another prime (51609441397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25804720668 + 25804720669.

It is an arithmetic number, because the mean of its divisors is an integer number (25804720669).

Almost surely, 2^51609441337 is an apocalyptic number.

It is an amenable number.

51609441337 is a deficient number, since it is larger than the sum of its proper divisors (1).

51609441337 is an equidigital number, since it uses as much as digits as its factorization.

51609441337 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 51609441337 in words is "fifty-one billion, six hundred nine million, four hundred forty-one thousand, three hundred thirty-seven".