154340444227 has 2 divisors, whose sum is σ = 154340444228. Its totient is φ = 154340444226.

The previous prime is 154340444213. The next prime is 154340444267. The reversal of 154340444227 is 722444043451.

It is an a-pointer prime, because the next prime (154340444267) can be obtained adding 154340444227 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154340444227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 154340444227.

It is not a weakly prime, because it can be changed into another prime (154340444267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77170222113 + 77170222114.

It is an arithmetic number, because the mean of its divisors is an integer number (77170222114).

Almost surely, 2^154340444227 is an apocalyptic number.

154340444227 is a deficient number, since it is larger than the sum of its proper divisors (1).

154340444227 is an equidigital number, since it uses as much as digits as its factorization.

154340444227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 430080, while the sum is 40.

Adding to 154340444227 its reverse (722444043451), we get a palindrome (876784487678).

The spelling of 154340444227 in words is "one hundred fifty-four billion, three hundred forty million, four hundred forty-four thousand, two hundred twenty-seven".