1316563344554 has 4 divisors (see below), whose sum is σ = 1974845016834. Its totient is φ = 658281672276.

The previous prime is 1316563344521. The next prime is 1316563344631. The reversal of 1316563344554 is 4554433656131.

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

It can be written as a sum of positive squares in only one way, i.e., 1139972613025 + 176590731529 = 1067695^2 + 420227^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329140836137 + ... + 329140836140.

Almost surely, 2^{1316563344554} is an apocalyptic number.

1316563344554 is a deficient number, since it is larger than the sum of its proper divisors (658281672280).

1316563344554 is an equidigital number, since it uses as much as digits as its factorization.

1316563344554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658281672279.

The product of its digits is 7776000, while the sum is 50.

The spelling of 1316563344554 in words is "one trillion, three hundred sixteen billion, five hundred sixty-three million, three hundred forty-four thousand, five hundred fifty-four".