12172398498 has 32 divisors (see below), whose sum is σ = 29130528000. Its totient is φ = 3745353168.

The previous prime is 12172398493. The next prime is 12172398503. The reversal of 12172398498 is 89489327121.

12172398498 is a `hidden beast` number, since 121 + 7 + 23 + 9 + 8 + 498 = 666.

It is an interprime number because it is at equal distance from previous prime (12172398493) and next prime (12172398503).

It is a super-2 number, since 2×12172398498² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (12172398493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8669098 + ... + 8670501.

It is an arithmetic number, because the mean of its divisors is an integer number (910329000).

Almost surely, 2^12172398498 is an apocalyptic number.

12172398498 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12172398498 is an abundant number, since it is smaller than the sum of its proper divisors (16958129502).

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

12172398498 is a wasteful number, since it uses less digits than its factorization.

12172398498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17339623 (or 17339617 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The spelling of 12172398498 in words is "twelve billion, one hundred seventy-two million, three hundred ninety-eight thousand, four hundred ninety-eight".