1331455247851 has 2 divisors, whose sum is σ = 1331455247852. Its totient is φ = 1331455247850.

The previous prime is 1331455247819. The next prime is 1331455247893. The reversal of 1331455247851 is 1587425541331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1331455247851 - 2⁵ = 1331455247819 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1331455247795 and 1331455247804.

It is not a weakly prime, because it can be changed into another prime (1331455247951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665727623925 + 665727623926.

It is an arithmetic number, because the mean of its divisors is an integer number (665727623926).

Almost surely, 2^{1331455247851} is an apocalyptic number.

1331455247851 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331455247851 is an equidigital number, since it uses as much as digits as its factorization.

1331455247851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016000, while the sum is 49.

The spelling of 1331455247851 in words is "one trillion, three hundred thirty-one billion, four hundred fifty-five million, two hundred forty-seven thousand, eight hundred fifty-one".