144203986564 has 81 divisors (see below), whose sum is σ = 284991527919. Its totient is φ = 63796656000.

The previous prime is 144203986541. The next prime is 144203986613. The reversal of 144203986564 is 465689302441.

The square root of 144203986564 is 379742.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 132392644164 + 11811342400 = 363858^2 + 108680^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 342527074 + ... + 342527494.

Almost surely, 2^144203986564 is an apocalyptic number.

144203986564 is the 379742-nd square number.

It is an amenable number.

144203986564 is a deficient number, since it is larger than the sum of its proper divisors (140787541355).

144203986564 is an equidigital number, since it uses as much as digits as its factorization.

144203986564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950 (or 475 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 52.

The spelling of 144203986564 in words is "one hundred forty-four billion, two hundred three million, nine hundred eighty-six thousand, five hundred sixty-four".