18805948235616 has 24 divisors (see below), whose sum is σ = 49365614118744. Its totient is φ = 6268649411840.

The previous prime is 18805948235593. The next prime is 18805948235653. The reversal of 18805948235616 is 61653284950881.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97947646965 + ... + 97947647156.

It is an arithmetic number, because the mean of its divisors is an integer number (2056900588281).

Almost surely, 2^{18805948235616} is an apocalyptic number.

18805948235616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18805948235616 is an abundant number, since it is smaller than the sum of its proper divisors (30559665883128).

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

18805948235616 is a wasteful number, since it uses less digits than its factorization.

18805948235616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195895294134 (or 195895294126 counting only the distinct ones).

The product of its (nonzero) digits is 99532800, while the sum is 66.

The spelling of 18805948235616 in words is "eighteen trillion, eight hundred five billion, nine hundred forty-eight million, two hundred thirty-five thousand, six hundred sixteen".