1326722467280 has 90 divisors (see below), whose sum is σ = 3588437810214. Its totient is φ = 454851548928.

The previous prime is 1326722467271. The next prime is 1326722467283. The reversal of 1326722467280 is 827642276231.

It can be written as a sum of positive squares in 3 ways, for example, as 677750441536 + 648972025744 = 823256^2 + 805588^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1326722467283) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 72107042 + ... + 72125438.

Almost surely, 2^{1326722467280} is an apocalyptic number.

1326722467280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1326722467280 is an abundant number, since it is smaller than the sum of its proper divisors (2261715342934).

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

1326722467280 is an frugal number, since it uses more digits than its factorization.

1326722467280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36821 (or 18411 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 50.

It can be divided in two parts, 132672 and 2467280, that added together give a palindrome (2599952).

The spelling of 1326722467280 in words is "one trillion, three hundred twenty-six billion, seven hundred twenty-two million, four hundred sixty-seven thousand, two hundred eighty".