18320262979536 has 720 divisors, whose sum is σ = 65787424335360. Its totient is φ = 4648223232000.

The previous prime is 18320262979531. The next prime is 18320262979643. The reversal of 18320262979536 is 63597926202381.

18320262979536 is a `hidden beast` number, since 1 + 8 + 3 + 2 + 0 + 2 + 6 + 2 + 97 + 9 + 536 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18320262979531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1389260335 + ... + 1389273521.

It is an arithmetic number, because the mean of its divisors is an integer number (91371422688).

Almost surely, 2^{18320262979536} is an apocalyptic number.

18320262979536 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 18320262979536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32893712167680).

18320262979536 is an abundant number, since it is smaller than the sum of its proper divisors (47467161355824).

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

18320262979536 is a wasteful number, since it uses less digits than its factorization.

18320262979536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13512 (or 13486 counting only the distinct ones).

The product of its (nonzero) digits is 58786560, while the sum is 63.

The spelling of 18320262979536 in words is "eighteen trillion, three hundred twenty billion, two hundred sixty-two million, nine hundred seventy-nine thousand, five hundred thirty-six".