18072231485 has 128 divisors (see below), whose sum is σ = 28900343808. Its totient is φ = 10605408000.

The previous prime is 18072231481. The next prime is 18072231491. The reversal of 18072231485 is 58413227081.

It is not a de Polignac number, because 18072231485 - 2² = 18072231481 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18072231481) 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 127 ways as a sum of consecutive naturals, for example, 108216872 + ... + 108217038.

It is an arithmetic number, because the mean of its divisors is an integer number (225783936).

Almost surely, 2^18072231485 is an apocalyptic number.

It is an amenable number.

18072231485 is a deficient number, since it is larger than the sum of its proper divisors (10828112323).

18072231485 is a wasteful number, since it uses less digits than its factorization.

18072231485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336 (or 314 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 41.

The spelling of 18072231485 in words is "eighteen billion, seventy-two million, two hundred thirty-one thousand, four hundred eighty-five".