28177234601 has 2 divisors, whose sum is σ = 28177234602. Its totient is φ = 28177234600.

The previous prime is 28177234567. The next prime is 28177234609. The reversal of 28177234601 is 10643277182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19736035225 + 8441199376 = 140485^2 + 91876^2 .

It is a cyclic number.

It is not a de Polignac number, because 28177234601 - 2⁶ = 28177234537 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (28177234609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14088617300 + 14088617301.

It is an arithmetic number, because the mean of its divisors is an integer number (14088617301).

Almost surely, 2^28177234601 is an apocalyptic number.

It is an amenable number.

28177234601 is a deficient number, since it is larger than the sum of its proper divisors (1).

28177234601 is an equidigital number, since it uses as much as digits as its factorization.

28177234601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112896, while the sum is 41.

The spelling of 28177234601 in words is "twenty-eight billion, one hundred seventy-seven million, two hundred thirty-four thousand, six hundred one".