28103577230777 has 2 divisors, whose sum is σ = 28103577230778. Its totient is φ = 28103577230776.

The previous prime is 28103577230731. The next prime is 28103577230797. The reversal of 28103577230777 is 77703277530182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20950247196736 + 7153330034041 = 4577144^2 + 2674571^2 .

It is a cyclic number.

It is not a de Polignac number, because 28103577230777 - 2⁶ = 28103577230713 is a prime.

It is a super-2 number, since 2×28103577230777² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28103577230717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14051788615388 + 14051788615389.

It is an arithmetic number, because the mean of its divisors is an integer number (14051788615389).

Almost surely, 2^{28103577230777} is an apocalyptic number.

It is an amenable number.

28103577230777 is a deficient number, since it is larger than the sum of its proper divisors (1).

28103577230777 is an equidigital number, since it uses as much as digits as its factorization.

28103577230777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24202080, while the sum is 59.

The spelling of 28103577230777 in words is "twenty-eight trillion, one hundred three billion, five hundred seventy-seven million, two hundred thirty thousand, seven hundred seventy-seven".