1215009506768 has 10 divisors (see below), whose sum is σ = 2354080919394. Its totient is φ = 607504753376.

The previous prime is 1215009506741. The next prime is 1215009506771. The reversal of 1215009506768 is 8676059005121.

It can be written as a sum of positive squares in only one way, i.e., 624460291984 + 590549214784 = 790228^2 + 768472^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37969047071 + ... + 37969047102.

Almost surely, 2^{1215009506768} is an apocalyptic number.

It is an amenable number.

1215009506768 is a deficient number, since it is larger than the sum of its proper divisors (1139071412626).

1215009506768 is an equidigital number, since it uses as much as digits as its factorization.

1215009506768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75938094181 (or 75938094175 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 50.

The spelling of 1215009506768 in words is "one trillion, two hundred fifteen billion, nine million, five hundred six thousand, seven hundred sixty-eight".