18099360972 has 144 divisors (see below), whose sum is σ = 57892353792. Its totient is φ = 4630919040.

The previous prime is 18099360971. The next prime is 18099360977. The reversal of 18099360972 is 27906399081.

It is not an unprimeable number, because it can be changed into a prime (18099360971) 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 47 ways as a sum of consecutive naturals, for example, 136998 + ... + 234450.

Almost surely, 2^18099360972 is an apocalyptic number.

18099360972 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 18099360972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28946176896).

18099360972 is an abundant number, since it is smaller than the sum of its proper divisors (39792992820).

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

18099360972 is a wasteful number, since it uses less digits than its factorization.

18099360972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97548 (or 97543 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 54.

The spelling of 18099360972 in words is "eighteen billion, ninety-nine million, three hundred sixty thousand, nine hundred seventy-two".