17838121331240 has 32 divisors (see below), whose sum is σ = 45869454852480. Its totient is φ = 6115927313472.

The previous prime is 17838121331207. The next prime is 17838121331263. The reversal of 17838121331240 is 4213312183871.

It is a junction number, because it is equal to n+sod(n) for n = 17838121331191 and 17838121331200.

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 7 ways as a sum of consecutive naturals, for example, 31853787812 + ... + 31853788371.

It is an arithmetic number, because the mean of its divisors is an integer number (1433420464140).

Almost surely, 2^{17838121331240} is an apocalyptic number.

17838121331240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

17838121331240 is an abundant number, since it is smaller than the sum of its proper divisors (28031333521240).

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

17838121331240 is a wasteful number, since it uses less digits than its factorization.

17838121331240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63707576201 (or 63707576197 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The spelling of 17838121331240 in words is "seventeen trillion, eight hundred thirty-eight billion, one hundred twenty-one million, three hundred thirty-one thousand, two hundred forty".