18072312352 has 12 divisors (see below), whose sum is σ = 35579865006. Its totient is φ = 9036156160.

The previous prime is 18072312347. The next prime is 18072312359. The reversal of 18072312352 is 25321327081.

It can be written as a sum of positive squares in only one way, i.e., 18053684496 + 18627856 = 134364^2 + 4316^2 .

It is not an unprimeable number, because it can be changed into a prime (18072312359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282379849 + ... + 282379912.

Almost surely, 2^18072312352 is an apocalyptic number.

It is an amenable number.

18072312352 is a deficient number, since it is larger than the sum of its proper divisors (17507552654).

18072312352 is an equidigital number, since it uses as much as digits as its factorization.

18072312352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564759771 (or 564759763 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 18072312352 in words is "eighteen billion, seventy-two million, three hundred twelve thousand, three hundred fifty-two".