18670454658648 has 192 divisors, whose sum is σ = 57878004824640. Its totient is φ = 5386269007872.

The previous prime is 18670454658637. The next prime is 18670454658683. The reversal of 18670454658648 is 84685645407681.

18670454658648 is a `hidden beast` number, since 1 + 8 + 6 + 7 + 0 + 45 + 465 + 86 + 48 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1954140 + ... + 6415572.

It is an arithmetic number, because the mean of its divisors is an integer number (301447941795).

Almost surely, 2^{18670454658648} is an apocalyptic number.

18670454658648 is a gapful number since it is divisible by the number (18) 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 18670454658648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28939002412320).

18670454658648 is an abundant number, since it is smaller than the sum of its proper divisors (39207550165992).

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

18670454658648 is a wasteful number, since it uses less digits than its factorization.

18670454658648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4461738 (or 4461731 counting only the distinct ones).

The product of its (nonzero) digits is 1238630400, while the sum is 72.

The spelling of 18670454658648 in words is "eighteen trillion, six hundred seventy billion, four hundred fifty-four million, six hundred fifty-eight thousand, six hundred forty-eight".