1098214805412 has 18 divisors (see below), whose sum is σ = 2776042980438. Its totient is φ = 366071601792.

The previous prime is 1098214805393. The next prime is 1098214805447. The reversal of 1098214805412 is 2145084128901.

1098214805412 is a `hidden beast` number, since 1 + 0 + 9 + 8 + 21 + 4 + 80 + 541 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1091389732416 + 6825072996 = 1044696^2 + 82614^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×1098214805412² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15252983373 + ... + 15252983444.

Almost surely, 2^{1098214805412} is an apocalyptic number.

1098214805412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1098214805412 is an abundant number, since it is smaller than the sum of its proper divisors (1677828175026).

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

1098214805412 is a wasteful number, since it uses less digits than its factorization.

1098214805412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30505966827 (or 30505966822 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 45.

The spelling of 1098214805412 in words is "one trillion, ninety-eight billion, two hundred fourteen million, eight hundred five thousand, four hundred twelve".