1316451251503 has 2 divisors, whose sum is σ = 1316451251504. Its totient is φ = 1316451251502.

The previous prime is 1316451251501. The next prime is 1316451251519. The reversal of 1316451251503 is 3051521546131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1316451251503 - 2¹ = 1316451251501 is a prime.

Together with 1316451251501, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1316451251501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658225625751 + 658225625752.

It is an arithmetic number, because the mean of its divisors is an integer number (658225625752).

Almost surely, 2^{1316451251503} is an apocalyptic number.

1316451251503 is a deficient number, since it is larger than the sum of its proper divisors (1).

1316451251503 is an equidigital number, since it uses as much as digits as its factorization.

1316451251503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54000, while the sum is 37.

Adding to 1316451251503 its reverse (3051521546131), we get a palindrome (4367972797634).

The spelling of 1316451251503 in words is "one trillion, three hundred sixteen billion, four hundred fifty-one million, two hundred fifty-one thousand, five hundred three".