1320013394464 has 12 divisors (see below), whose sum is σ = 2598776370414. Its totient is φ = 660006697216.

The previous prime is 1320013394443. The next prime is 1320013394489. The reversal of 1320013394464 is 4644933100231.

It can be written as a sum of positive squares in only one way, i.e., 1202838627600 + 117174766864 = 1096740^2 + 342308^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20625209257 + ... + 20625209320.

Almost surely, 2^{1320013394464} is an apocalyptic number.

It is an amenable number.

1320013394464 is a deficient number, since it is larger than the sum of its proper divisors (1278762975950).

1320013394464 is an equidigital number, since it uses as much as digits as its factorization.

1320013394464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41250418587 (or 41250418579 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 40.

Adding to 1320013394464 its reverse (4644933100231), we get a palindrome (5964946494695).

The spelling of 1320013394464 in words is "one trillion, three hundred twenty billion, thirteen million, three hundred ninety-four thousand, four hundred sixty-four".