18672278016 has 160 divisors (see below), whose sum is σ = 57196339200. Its totient is φ = 5302480896.

The previous prime is 18672278011. The next prime is 18672278021. The reversal of 18672278016 is 61087227681.

It is an interprime number because it is at equal distance from previous prime (18672278011) and next prime (18672278021).

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (18672278011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1790385 + ... + 1800783.

It is an arithmetic number, because the mean of its divisors is an integer number (357477120).

Almost surely, 2^18672278016 is an apocalyptic number.

18672278016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18672278016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28598169600).

18672278016 is an abundant number, since it is smaller than the sum of its proper divisors (38524061184).

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

18672278016 is a wasteful number, since it uses less digits than its factorization.

18672278016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10594 (or 10578 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 48.

The spelling of 18672278016 in words is "eighteen billion, six hundred seventy-two million, two hundred seventy-eight thousand, sixteen".