1218471326832 has 80 divisors (see below), whose sum is σ = 3274842079232. Its totient is φ = 389960282880.

The previous prime is 1218471326777. The next prime is 1218471326881. The reversal of 1218471326832 is 2386231748121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3034903 + ... + 3412854.

Almost surely, 2^{1218471326832} is an apocalyptic number.

1218471326832 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1218471326832 is an abundant number, since it is smaller than the sum of its proper divisors (2056370752400).

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

1218471326832 is a wasteful number, since it uses less digits than its factorization.

1218471326832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6447926 (or 6447920 counting only the distinct ones).

The product of its digits is 774144, while the sum is 48.

The spelling of 1218471326832 in words is "one trillion, two hundred eighteen billion, four hundred seventy-one million, three hundred twenty-six thousand, eight hundred thirty-two".