18039475194040 has 32 divisors (see below), whose sum is σ = 41988433644000. Its totient is φ = 6966969729664.

The previous prime is 18039475194019. The next prime is 18039475194043. The reversal of 18039475194040 is 4049157493081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18039475194043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7775634700 + ... + 7775637019.

It is an arithmetic number, because the mean of its divisors is an integer number (1312138551375).

Almost surely, 2^{18039475194040} is an apocalyptic number.

18039475194040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18039475194040 is an abundant number, since it is smaller than the sum of its proper divisors (23948958449960).

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

18039475194040 is a wasteful number, since it uses less digits than its factorization.

18039475194040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15551271759 (or 15551271755 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 18039475194040 in words is "eighteen trillion, thirty-nine billion, four hundred seventy-five million, one hundred ninety-four thousand, forty".