1215057409516 has 12 divisors (see below), whose sum is σ = 2150242045560. Its totient is φ = 600702539360.

The previous prime is 1215057409513. The next prime is 1215057409549. The reversal of 1215057409516 is 6159047505121.

It is not an unprimeable number, because it can be changed into a prime (1215057409513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1706540950 + ... + 1706541661.

It is an arithmetic number, because the mean of its divisors is an integer number (179186837130).

Almost surely, 2^{1215057409516} is an apocalyptic number.

It is an amenable number.

1215057409516 is a deficient number, since it is larger than the sum of its proper divisors (935184636044).

1215057409516 is a wasteful number, since it uses less digits than its factorization.

1215057409516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3413082704 (or 3413082702 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 46.

The spelling of 1215057409516 in words is "one trillion, two hundred fifteen billion, fifty-seven million, four hundred nine thousand, five hundred sixteen".