1218602361601 has 8 divisors (see below), whose sum is σ = 1221304267584. Its totient is φ = 1215902982960.

The previous prime is 1218602361527. The next prime is 1218602361607. The reversal of 1218602361601 is 1061632068121.

It is a happy number.

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 1218602361601 - 2²³ = 1218593972993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1218602361607) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 335206 + ... + 1596736.

It is an arithmetic number, because the mean of its divisors is an integer number (152663033448).

Almost surely, 2^{1218602361601} is an apocalyptic number.

It is an amenable number.

1218602361601 is a deficient number, since it is larger than the sum of its proper divisors (2701905983).

1218602361601 is a wasteful number, since it uses less digits than its factorization.

1218602361601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263671.

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 1218602361601 in words is "one trillion, two hundred eighteen billion, six hundred two million, three hundred sixty-one thousand, six hundred one".