18272305152 has 180 divisors, whose sum is σ = 54618001620. Its totient is φ = 5879365632.

The previous prime is 18272305091. The next prime is 18272305189. The reversal of 18272305152 is 25150327281.

It can be written as a sum of positive squares in 2 ways, for example, as 7201898496 + 11070406656 = 84864^2 + 105216^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4274088 + ... + 4278360.

Almost surely, 2^18272305152 is an apocalyptic number.

18272305152 is a gapful number since it is divisible by the number (12) 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 18272305152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27309000810).

18272305152 is an abundant number, since it is smaller than the sum of its proper divisors (36345696468).

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

18272305152 is an equidigital number, since it uses as much as digits as its factorization.

18272305152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4336 (or 4307 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The spelling of 18272305152 in words is "eighteen billion, two hundred seventy-two million, three hundred five thousand, one hundred fifty-two".