18276201216 has 432 divisors, whose sum is σ = 65964458560. Its totient is φ = 4737761280.

The previous prime is 18276201131. The next prime is 18276201227. The reversal of 18276201216 is 61210267281.

18276201216 is a `hidden beast` number, since 1 + 8 + 2 + 7 + 620 + 1 + 21 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12788790 + ... + 12790218.

Almost surely, 2^18276201216 is an apocalyptic number.

18276201216 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 18276201216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32982229280).

18276201216 is an abundant number, since it is smaller than the sum of its proper divisors (47688257344).

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

18276201216 is a wasteful number, since it uses less digits than its factorization.

18276201216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1532 (or 1515 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

Adding to 18276201216 its reverse (61210267281), we get a palindrome (79486468497).

The spelling of 18276201216 in words is "eighteen billion, two hundred seventy-six million, two hundred one thousand, two hundred sixteen".