1323871155216 has 225 divisors, whose sum is σ = 3963100478799. Its totient is φ = 426640996800.

The previous prime is 1323871155193. The next prime is 1323871155223. The reversal of 1323871155216 is 6125511783231.

The square root of 1323871155216 is 1150596.

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

1323871155216 is a `hidden beast` number, since 1 + 3 + 2 + 3 + 8 + 7 + 115 + 521 + 6 = 666.

It is a super-2 number, since 2×1323871155216² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 1284064621 + ... + 1284065651.

Almost surely, 2^{1323871155216} is an apocalyptic number.

1323871155216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1323871155216 is the 1150596-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1323871155216

1323871155216 is an abundant number, since it is smaller than the sum of its proper divisors (2639229323583).

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

1323871155216 is an frugal number, since it uses more digits than its factorization.

1323871155216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2144 (or 1067 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The spelling of 1323871155216 in words is "one trillion, three hundred twenty-three billion, eight hundred seventy-one million, one hundred fifty-five thousand, two hundred sixteen".