28648037177 has 2 divisors, whose sum is σ = 28648037178. Its totient is φ = 28648037176.

The previous prime is 28648037153. The next prime is 28648037239. The reversal of 28648037177 is 77173084682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27643717696 + 1004319481 = 166264^2 + 31691^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28648037177 is a prime.

It is not a weakly prime, because it can be changed into another prime (28648037777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14324018588 + 14324018589.

It is an arithmetic number, because the mean of its divisors is an integer number (14324018589).

Almost surely, 2^28648037177 is an apocalyptic number.

It is an amenable number.

28648037177 is a deficient number, since it is larger than the sum of its proper divisors (1).

28648037177 is an equidigital number, since it uses as much as digits as its factorization.

28648037177 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3161088, while the sum is 53.

The spelling of 28648037177 in words is "twenty-eight billion, six hundred forty-eight million, thirty-seven thousand, one hundred seventy-seven".