1320503833399 has 4 divisors (see below), whose sum is σ = 1322658000136. Its totient is φ = 1318349666664.

The previous prime is 1320503833393. The next prime is 1320503833417. The reversal of 1320503833399 is 9933383050231.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1320503833399 - 2⁵ = 1320503833367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320503833393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1077082449 + ... + 1077083674.

It is an arithmetic number, because the mean of its divisors is an integer number (330664500034).

Almost surely, 2^{1320503833399} is an apocalyptic number.

1320503833399 is a deficient number, since it is larger than the sum of its proper divisors (2154166737).

1320503833399 is an equidigital number, since it uses as much as digits as its factorization.

1320503833399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2154166736.

The product of its (nonzero) digits is 1574640, while the sum is 49.

The spelling of 1320503833399 in words is "one trillion, three hundred twenty billion, five hundred three million, eight hundred thirty-three thousand, three hundred ninety-nine".