17872743798 has 96 divisors (see below), whose sum is σ = 49425981696. Its totient is φ = 4713679008.

The previous prime is 17872743781. The next prime is 17872743853. The reversal of 17872743798 is 89734727871.

17872743798 is a `hidden beast` number, since 17 + 87 + 27 + 437 + 98 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 157836 + ... + 246287.

It is an arithmetic number, because the mean of its divisors is an integer number (514853976).

Almost surely, 2^17872743798 is an apocalyptic number.

17872743798 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

17872743798 is an abundant number, since it is smaller than the sum of its proper divisors (31553237898).

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

17872743798 is a wasteful number, since it uses less digits than its factorization.

17872743798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404160 (or 404148 counting only the distinct ones).

The product of its digits is 33191424, while the sum is 63.

The spelling of 17872743798 in words is "seventeen billion, eight hundred seventy-two million, seven hundred forty-three thousand, seven hundred ninety-eight".