18689439005952 has 288 divisors, whose sum is σ = 61874657550720. Its totient is φ = 4920296079360.

The previous prime is 18689439005863. The next prime is 18689439006011. The reversal of 18689439005952 is 25950093498681.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3138177 + ... + 6872192.

It is an arithmetic number, because the mean of its divisors is an integer number (214842560940).

Almost surely, 2^{18689439005952} is an apocalyptic number.

18689439005952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18689439005952 is an abundant number, since it is smaller than the sum of its proper divisors (43185218544768).

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

18689439005952 is a wasteful number, since it uses less digits than its factorization.

18689439005952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10010429 (or 10010415 counting only the distinct ones).

The product of its (nonzero) digits is 167961600, while the sum is 69.

The spelling of 18689439005952 in words is "eighteen trillion, six hundred eighty-nine billion, four hundred thirty-nine million, five thousand, nine hundred fifty-two".