148812320644 has 81 divisors (see below), whose sum is σ = 290546967501. Its totient is φ = 66659673600.

The previous prime is 148812320639. The next prime is 148812320719. The reversal of 148812320644 is 446023218841.

The square root of 148812320644 is 385762.

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

It can be written as a sum of positive squares in 13 ways, for example, as 186650244 + 148625670400 = 13662^2 + 385520^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 148812320644.

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, 371102844 + ... + 371103244.

Almost surely, 2^148812320644 is an apocalyptic number.

148812320644 is the 385762-nd square number.

It is an amenable number.

148812320644 is a deficient number, since it is larger than the sum of its proper divisors (141734646857).

148812320644 is an equidigital number, since it uses as much as digits as its factorization.

148812320644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906 (or 453 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 43.

The spelling of 148812320644 in words is "one hundred forty-eight billion, eight hundred twelve million, three hundred twenty thousand, six hundred forty-four".