18676562520 has 256 divisors, whose sum is σ = 71744486400. Its totient is φ = 3775887360.

The previous prime is 18676562473. The next prime is 18676562539. The reversal of 18676562520 is 2526567681.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18676562520.

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 63 ways as a sum of consecutive naturals, for example, 314566 + ... + 369194.

It is an arithmetic number, because the mean of its divisors is an integer number (280251900).

Almost surely, 2^18676562520 is an apocalyptic number.

18676562520 is a gapful number since it is divisible by the number (10) 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 18676562520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35872243200).

18676562520 is an abundant number, since it is smaller than the sum of its proper divisors (53067923880).

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

18676562520 is a wasteful number, since it uses less digits than its factorization.

18676562520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54698 (or 54694 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 48.

The spelling of 18676562520 in words is "eighteen billion, six hundred seventy-six million, five hundred sixty-two thousand, five hundred twenty".