1326997619760 has 80 divisors (see below), whose sum is σ = 4115993389920. Its totient is φ = 353668116480.

The previous prime is 1326997619749. The next prime is 1326997619821. The reversal of 1326997619760 is 679167996231.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 1326997619691 and 1326997619700.

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 15 ways as a sum of consecutive naturals, for example, 1115961 + ... + 1974680.

It is an arithmetic number, because the mean of its divisors is an integer number (51449917374).

Almost surely, 2^{1326997619760} is an apocalyptic number.

1326997619760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1326997619760 is an abundant number, since it is smaller than the sum of its proper divisors (2788995770160).

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

1326997619760 is a wasteful number, since it uses less digits than its factorization.

1326997619760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3092446 (or 3092440 counting only the distinct ones).

The product of its (nonzero) digits is 46294416, while the sum is 66.

The spelling of 1326997619760 in words is "one trillion, three hundred twenty-six billion, nine hundred ninety-seven million, six hundred nineteen thousand, seven hundred sixty".