51168035533 has 2 divisors, whose sum is σ = 51168035534. Its totient is φ = 51168035532.

The previous prime is 51168035509. The next prime is 51168035621. The reversal of 51168035533 is 33553086115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45931776489 + 5236259044 = 214317^2 + 72362^2 .

It is a cyclic number.

It is not a de Polignac number, because 51168035533 - 2²⁹ = 50631164621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51168005533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25584017766 + 25584017767.

It is an arithmetic number, because the mean of its divisors is an integer number (25584017767).

Almost surely, 2^51168035533 is an apocalyptic number.

It is an amenable number.

51168035533 is a deficient number, since it is larger than the sum of its proper divisors (1).

51168035533 is an equidigital number, since it uses as much as digits as its factorization.

51168035533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162000, while the sum is 40.

The spelling of 51168035533 in words is "fifty-one billion, one hundred sixty-eight million, thirty-five thousand, five hundred thirty-three".