28028352460777 has 2 divisors, whose sum is σ = 28028352460778. Its totient is φ = 28028352460776.

The previous prime is 28028352460769. The next prime is 28028352460811. The reversal of 28028352460777 is 77706425382082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28028352460761 + 16 = 5294181^2 + 4^2 .

It is a cyclic number.

It is not a de Polignac number, because 28028352460777 - 2³ = 28028352460769 is a prime.

It is a super-2 number, since 2×28028352460777² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28028352463777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14014176230388 + 14014176230389.

It is an arithmetic number, because the mean of its divisors is an integer number (14014176230389).

Almost surely, 2^{28028352460777} is an apocalyptic number.

It is an amenable number.

28028352460777 is a deficient number, since it is larger than the sum of its proper divisors (1).

28028352460777 is an equidigital number, since it uses as much as digits as its factorization.

28028352460777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63221760, while the sum is 61.

The spelling of 28028352460777 in words is "twenty-eight trillion, twenty-eight billion, three hundred fifty-two million, four hundred sixty thousand, seven hundred seventy-seven".