1215102052399 has 2 divisors, whose sum is σ = 1215102052400. Its totient is φ = 1215102052398.

The previous prime is 1215102052393. The next prime is 1215102052427. The reversal of 1215102052399 is 9932502015121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1215102052399 - 2¹⁵ = 1215102019631 is a prime.

It is a super-3 number, since 3×1215102052399³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1215102052393) 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, 607551026199 + 607551026200.

It is an arithmetic number, because the mean of its divisors is an integer number (607551026200).

Almost surely, 2^{1215102052399} is an apocalyptic number.

1215102052399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1215102052399 is an equidigital number, since it uses as much as digits as its factorization.

1215102052399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48600, while the sum is 40.

The spelling of 1215102052399 in words is "one trillion, two hundred fifteen billion, one hundred two million, fifty-two thousand, three hundred ninety-nine".