1218363452064 has 72 divisors (see below), whose sum is σ = 3779695719072. Its totient is φ = 369201045120.

The previous prime is 1218363451979. The next prime is 1218363452087. The reversal of 1218363452064 is 4602543638121.

1218363452064 is a `hidden beast` number, since 1 + 2 + 1 + 8 + 3 + 63 + 4 + 520 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 192289044 + ... + 192295379.

It is an arithmetic number, because the mean of its divisors is an integer number (52495773876).

Almost surely, 2^{1218363452064} is an apocalyptic number.

It is an amenable number.

1218363452064 is an abundant number, since it is smaller than the sum of its proper divisors (2561332267008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1218363452064 is a wasteful number, since it uses less digits than its factorization.

1218363452064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384584450 (or 384584439 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The spelling of 1218363452064 in words is "one trillion, two hundred eighteen billion, three hundred sixty-three million, four hundred fifty-two thousand, sixty-four".