18280570312272 has 80 divisors (see below), whose sum is σ = 48405729835008. Its totient is φ = 5941325045760.

The previous prime is 18280570312271. The next prime is 18280570312289. The reversal of 18280570312272 is 27221307508281.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18280570312271) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 479968 + ... + 6065600.

Almost surely, 2^{18280570312272} is an apocalyptic number.

18280570312272 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 18280570312272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24202864917504).

18280570312272 is an abundant number, since it is smaller than the sum of its proper divisors (30125159522736).

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

18280570312272 is a wasteful number, since it uses less digits than its factorization.

18280570312272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5587348 (or 5587342 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 48.

The spelling of 18280570312272 in words is "eighteen trillion, two hundred eighty billion, five hundred seventy million, three hundred twelve thousand, two hundred seventy-two".