154986863194384 has 135 divisors (see below), whose sum is σ = 345439786771503. Its totient is φ = 67319829697536.

The previous prime is 154986863194379. The next prime is 154986863194391. The reversal of 154986863194384 is 483491368689451.

The square root of 154986863194384 is 12449372.

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 1399422752784 + 153587440441600 = 1182972^2 + 12393040^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 11005237807 + ... + 11005251889.

Almost surely, 2^{154986863194384} is an apocalyptic number.

154986863194384 is the 12449372-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 154986863194384

154986863194384 is an abundant number, since it is smaller than the sum of its proper divisors (190452923577119).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

154986863194384 is an frugal number, since it uses more digits than its factorization.

154986863194384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28234 (or 14115 counting only the distinct ones).

The product of its digits is 4299816960, while the sum is 79.

The spelling of 154986863194384 in words is "one hundred fifty-four trillion, nine hundred eighty-six billion, eight hundred sixty-three million, one hundred ninety-four thousand, three hundred eighty-four".