1215454541071 has 2 divisors, whose sum is σ = 1215454541072. Its totient is φ = 1215454541070.

The previous prime is 1215454541017. The next prime is 1215454541089. The reversal of 1215454541071 is 1701454545121.

Together with previous prime (1215454541017) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1215454541071 - 2²⁵ = 1215420986639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1215454541011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607727270535 + 607727270536.

It is an arithmetic number, because the mean of its divisors is an integer number (607727270536).

Almost surely, 2^{1215454541071} is an apocalyptic number.

1215454541071 is a deficient number, since it is larger than the sum of its proper divisors (1).

1215454541071 is an equidigital number, since it uses as much as digits as its factorization.

1215454541071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112000, while the sum is 40.

The spelling of 1215454541071 in words is "one trillion, two hundred fifteen billion, four hundred fifty-four million, five hundred forty-one thousand, seventy-one".