18125756801 has 2 divisors, whose sum is σ = 18125756802. Its totient is φ = 18125756800.

The previous prime is 18125756777. The next prime is 18125756807. The reversal of 18125756801 is 10865752181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13027939600 + 5097817201 = 114140^2 + 71399^2 .

It is a cyclic number.

It is not a de Polignac number, because 18125756801 - 2¹⁰ = 18125755777 is a prime.

It is not a weakly prime, because it can be changed into another prime (18125756807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9062878400 + 9062878401.

It is an arithmetic number, because the mean of its divisors is an integer number (9062878401).

Almost surely, 2^18125756801 is an apocalyptic number.

It is an amenable number.

18125756801 is a deficient number, since it is larger than the sum of its proper divisors (1).

18125756801 is an equidigital number, since it uses as much as digits as its factorization.

18125756801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 134400, while the sum is 44.

The spelling of 18125756801 in words is "eighteen billion, one hundred twenty-five million, seven hundred fifty-six thousand, eight hundred one".