51002666573 has 2 divisors, whose sum is σ = 51002666574. Its totient is φ = 51002666572.

The previous prime is 51002666567. The next prime is 51002666581. The reversal of 51002666573 is 37566620015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44532394729 + 6470271844 = 211027^2 + 80438^2 .

It is a cyclic number.

It is not a de Polignac number, because 51002666573 - 2¹⁴ = 51002650189 is a prime.

It is a super-2 number, since 2×51002666573² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51002666573.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51002666173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25501333286 + 25501333287.

It is an arithmetic number, because the mean of its divisors is an integer number (25501333287).

Almost surely, 2^51002666573 is an apocalyptic number.

It is an amenable number.

51002666573 is a deficient number, since it is larger than the sum of its proper divisors (1).

51002666573 is an equidigital number, since it uses as much as digits as its factorization.

51002666573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 226800, while the sum is 41.

The spelling of 51002666573 in words is "fifty-one billion, two million, six hundred sixty-six thousand, five hundred seventy-three".