12182155398 has 24 divisors (see below), whose sum is σ = 30165337488. Its totient is φ = 3480615792.

The previous prime is 12182155369. The next prime is 12182155423. The reversal of 12182155398 is 89355128121.

12182155398 is a `hidden beast` number, since 1 + 2 + 1 + 8 + 2 + 1 + 553 + 98 = 666.

It is a congruent number.

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, 48341761 + ... + 48342012.

It is an arithmetic number, because the mean of its divisors is an integer number (1256889062).

Almost surely, 2^12182155398 is an apocalyptic number.

12182155398 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12182155398 is an abundant number, since it is smaller than the sum of its proper divisors (17983182090).

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

12182155398 is a wasteful number, since it uses less digits than its factorization.

12182155398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96683788 (or 96683785 counting only the distinct ones).

The product of its digits is 172800, while the sum is 45.

The spelling of 12182155398 in words is "twelve billion, one hundred eighty-two million, one hundred fifty-five thousand, three hundred ninety-eight".