144640564072 has 8 divisors (see below), whose sum is σ = 271201057650. Its totient is φ = 72320282032.

The previous prime is 144640564067. The next prime is 144640564141. The reversal of 144640564072 is 270465046441.

It can be written as a sum of positive squares in only one way, i.e., 108210734116 + 36429829956 = 328954^2 + 190866^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9040035247 + ... + 9040035262.

Almost surely, 2^144640564072 is an apocalyptic number.

It is an amenable number.

144640564072 is a deficient number, since it is larger than the sum of its proper divisors (126560493578).

144640564072 is a wasteful number, since it uses less digits than its factorization.

144640564072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18080070515 (or 18080070511 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 43.

The spelling of 144640564072 in words is "one hundred forty-four billion, six hundred forty million, five hundred sixty-four thousand, seventy-two".