18238747547416 has 32 divisors (see below), whose sum is σ = 37863342953280. Its totient is φ = 8166603376800.

The previous prime is 18238747547393. The next prime is 18238747547473. The reversal of 18238747547416 is 61474574783281.

It is a Harshad number since it is a multiple of its sum of digits (67).

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 7 ways as a sum of consecutive naturals, for example, 1546699290 + ... + 1546711081.

It is an arithmetic number, because the mean of its divisors is an integer number (1183229467290).

Almost surely, 2^{18238747547416} is an apocalyptic number.

It is an amenable number.

18238747547416 is an abundant number, since it is smaller than the sum of its proper divisors (19624595405864).

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

18238747547416 is a wasteful number, since it uses less digits than its factorization.

18238747547416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3093410455 (or 3093410451 counting only the distinct ones).

The product of its digits is 252887040, while the sum is 67.

The spelling of 18238747547416 in words is "eighteen trillion, two hundred thirty-eight billion, seven hundred forty-seven million, five hundred forty-seven thousand, four hundred sixteen".