1320219384064 has 81 divisors (see below), whose sum is σ = 3065830571307. Its totient is φ = 565753155072.

The previous prime is 1320219384049. The next prime is 1320219384097. The reversal of 1320219384064 is 4604839120231.

The square root of 1320219384064 is 1149008.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1320219384064.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 128683767 + ... + 128694025.

Almost surely, 2^{1320219384064} is an apocalyptic number.

1320219384064 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1320219384064 is the 1149008-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1320219384064

1320219384064 is an abundant number, since it is smaller than the sum of its proper divisors (1745611187243).

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

1320219384064 is an frugal number, since it uses more digits than its factorization.

1320219384064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20548 (or 10268 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 43.

The spelling of 1320219384064 in words is "one trillion, three hundred twenty billion, two hundred nineteen million, three hundred eighty-four thousand, sixty-four".