1218775480115 has 8 divisors (see below), whose sum is σ = 1462543652880. Its totient is φ = 975011666272.

The previous prime is 1218775480073. The next prime is 1218775480121. The reversal of 1218775480115 is 5110845778121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1218775480115 - 2¹⁰ = 1218775479091 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 439304 + ... + 1621893.

It is an arithmetic number, because the mean of its divisors is an integer number (182817956610).

Almost surely, 2^{1218775480115} is an apocalyptic number.

1218775480115 is a deficient number, since it is larger than the sum of its proper divisors (243768172765).

1218775480115 is a wasteful number, since it uses less digits than its factorization.

1218775480115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2179461.

The product of its (nonzero) digits is 627200, while the sum is 50.

The spelling of 1218775480115 in words is "one trillion, two hundred eighteen billion, seven hundred seventy-five million, four hundred eighty thousand, one hundred fifteen".