1247572216013 has 2 divisors, whose sum is σ = 1247572216014. Its totient is φ = 1247572216012.

The previous prime is 1247572215977. The next prime is 1247572216097. The reversal of 1247572216013 is 3106122757421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1244213086249 + 3359129764 = 1115443^2 + 57958^2 .

It is a cyclic number.

It is not a de Polignac number, because 1247572216013 - 2¹⁰ = 1247572214989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1247572212013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 623786108006 + 623786108007.

It is an arithmetic number, because the mean of its divisors is an integer number (623786108007).

Almost surely, 2^{1247572216013} is an apocalyptic number.

It is an amenable number.

1247572216013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1247572216013 is an equidigital number, since it uses as much as digits as its factorization.

1247572216013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141120, while the sum is 41.

The spelling of 1247572216013 in words is "one trillion, two hundred forty-seven billion, five hundred seventy-two million, two hundred sixteen thousand, thirteen".