1331320111456 has 12 divisors (see below), whose sum is σ = 2621036469492. Its totient is φ = 665660055712.

The previous prime is 1331320111447. The next prime is 1331320111463. The reversal of 1331320111456 is 6541110231331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20801876710 + ... + 20801876773.

It is an arithmetic number, because the mean of its divisors is an integer number (218419705791).

Almost surely, 2^{1331320111456} is an apocalyptic number.

1331320111456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1331320111456 is a deficient number, since it is larger than the sum of its proper divisors (1289716358036).

1331320111456 is an equidigital number, since it uses as much as digits as its factorization.

1331320111456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41603753493 (or 41603753485 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

Adding to 1331320111456 its reverse (6541110231331), we get a palindrome (7872430342787).

The spelling of 1331320111456 in words is "one trillion, three hundred thirty-one billion, three hundred twenty million, one hundred eleven thousand, four hundred fifty-six".