178428398801 has 2 divisors, whose sum is σ = 178428398802. Its totient is φ = 178428398800.

The previous prime is 178428398779. The next prime is 178428398843. The reversal of 178428398801 is 108893824871.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98847988801 + 79580410000 = 314401^2 + 282100^2 .

It is a cyclic number.

It is not a de Polignac number, because 178428398801 - 2²⁶ = 178361289937 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 (178428398881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 89214199400 + 89214199401.

It is an arithmetic number, because the mean of its divisors is an integer number (89214199401).

Almost surely, 2^178428398801 is an apocalyptic number.

It is an amenable number.

178428398801 is a deficient number, since it is larger than the sum of its proper divisors (1).

178428398801 is an equidigital number, since it uses as much as digits as its factorization.

178428398801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6193152, while the sum is 59.

The spelling of 178428398801 in words is "one hundred seventy-eight billion, four hundred twenty-eight million, three hundred ninety-eight thousand, eight hundred one".