3028355400781 has 2 divisors, whose sum is σ = 3028355400782. Its totient is φ = 3028355400780.

The previous prime is 3028355400773. The next prime is 3028355400853. The reversal of 3028355400781 is 1870045538203.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3008108672100 + 20246728681 = 1734390^2 + 142291^2 .

It is a cyclic number.

It is not a de Polignac number, because 3028355400781 - 2³ = 3028355400773 is a prime.

It is a super-2 number, since 2×3028355400781² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3028355410781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1514177700390 + 1514177700391.

It is an arithmetic number, because the mean of its divisors is an integer number (1514177700391).

Almost surely, 2^{3028355400781} is an apocalyptic number.

It is an amenable number.

3028355400781 is a deficient number, since it is larger than the sum of its proper divisors (1).

3028355400781 is an equidigital number, since it uses as much as digits as its factorization.

3028355400781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 806400, while the sum is 46.

The spelling of 3028355400781 in words is "three trillion, twenty-eight billion, three hundred fifty-five million, four hundred thousand, seven hundred eighty-one".