1215102051893 has 2 divisors, whose sum is σ = 1215102051894. Its totient is φ = 1215102051892.

The previous prime is 1215102051883. The next prime is 1215102051967. The reversal of 1215102051893 is 3981502015121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1214188017604 + 914034289 = 1101902^2 + 30233^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1215102051893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1215102051833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607551025946 + 607551025947.

It is an arithmetic number, because the mean of its divisors is an integer number (607551025947).

Almost surely, 2^{1215102051893} is an apocalyptic number.

It is an amenable number.

1215102051893 is a deficient number, since it is larger than the sum of its proper divisors (1).

1215102051893 is an equidigital number, since it uses as much as digits as its factorization.

1215102051893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 38.

The spelling of 1215102051893 in words is "one trillion, two hundred fifteen billion, one hundred two million, fifty-one thousand, eight hundred ninety-three".