144201397891 has 2 divisors, whose sum is σ = 144201397892. Its totient is φ = 144201397890.

The previous prime is 144201397867. The next prime is 144201397937. The reversal of 144201397891 is 198793102441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 144201397891 - 2⁵ = 144201397859 is a prime.

It is not a weakly prime, because it can be changed into another prime (144201391891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72100698945 + 72100698946.

It is an arithmetic number, because the mean of its divisors is an integer number (72100698946).

Almost surely, 2^144201397891 is an apocalyptic number.

144201397891 is a deficient number, since it is larger than the sum of its proper divisors (1).

144201397891 is an equidigital number, since it uses as much as digits as its factorization.

144201397891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 49.

The spelling of 144201397891 in words is "one hundred forty-four billion, two hundred one million, three hundred ninety-seven thousand, eight hundred ninety-one".