144591911618 has 16 divisors (see below), whose sum is σ = 270405653184. Its totient is φ = 56334510960.

The previous prime is 144591911617. The next prime is 144591911657. The reversal of 144591911618 is 816119195441.

It is not an unprimeable number, because it can be changed into a prime (144591911617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469454105 + ... + 469454412.

It is an arithmetic number, because the mean of its divisors is an integer number (16900353324).

Almost surely, 2^144591911618 is an apocalyptic number.

144591911618 is a deficient number, since it is larger than the sum of its proper divisors (125813741566).

144591911618 is a wasteful number, since it uses less digits than its factorization.

144591911618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938908537.

The product of its digits is 311040, while the sum is 50.

The spelling of 144591911618 in words is "one hundred forty-four billion, five hundred ninety-one million, nine hundred eleven thousand, six hundred eighteen".