1320364645775 has 24 divisors (see below), whose sum is σ = 1981212703200. Its totient is φ = 852134492160.

The previous prime is 1320364645771. The next prime is 1320364645781. The reversal of 1320364645775 is 5775464630231.

It is not a de Polignac number, because 1320364645775 - 2² = 1320364645771 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320364645771) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 221907050 + ... + 221912999.

It is an arithmetic number, because the mean of its divisors is an integer number (82550529300).

Almost surely, 2^{1320364645775} is an apocalyptic number.

1320364645775 is a deficient number, since it is larger than the sum of its proper divisors (660848057425).

1320364645775 is a wasteful number, since it uses less digits than its factorization.

1320364645775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443820083 (or 443820078 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 53.

The spelling of 1320364645775 in words is "one trillion, three hundred twenty billion, three hundred sixty-four million, six hundred forty-five thousand, seven hundred seventy-five".