227440156081 has 2 divisors, whose sum is σ = 227440156082. Its totient is φ = 227440156080.

The previous prime is 227440155989. The next prime is 227440156109. The reversal of 227440156081 is 180651044722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152692596081 + 74747560000 = 390759^2 + 273400^2 .

It is a cyclic number.

It is not a de Polignac number, because 227440156081 - 2²³ = 227431767473 is a prime.

It is a super-2 number, since 2×227440156081² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (227440156381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113720078040 + 113720078041.

It is an arithmetic number, because the mean of its divisors is an integer number (113720078041).

Almost surely, 2^227440156081 is an apocalyptic number.

It is an amenable number.

227440156081 is a deficient number, since it is larger than the sum of its proper divisors (1).

227440156081 is an equidigital number, since it uses as much as digits as its factorization.

227440156081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 107520, while the sum is 40.

The spelling of 227440156081 in words is "two hundred twenty-seven billion, four hundred forty million, one hundred fifty-six thousand, eighty-one".