1323819521808 has 40 divisors (see below), whose sum is σ = 3908419541568. Its totient is φ = 378234148992.

The previous prime is 1323819521803. The next prime is 1323819521813. The reversal of 1323819521808 is 8081259183231.

It is an interprime number because it is at equal distance from previous prime (1323819521803) and next prime (1323819521813).

It is not an unprimeable number, because it can be changed into a prime (1323819521803) 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 7 ways as a sum of consecutive naturals, for example, 1969969191 + ... + 1969969862.

Almost surely, 2^{1323819521808} is an apocalyptic number.

It is an amenable number.

1323819521808 is an abundant number, since it is smaller than the sum of its proper divisors (2584600019760).

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

1323819521808 is a wasteful number, since it uses less digits than its factorization.

1323819521808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3939939071 (or 3939939065 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 51.

The spelling of 1323819521808 in words is "one trillion, three hundred twenty-three billion, eight hundred nineteen million, five hundred twenty-one thousand, eight hundred eight".