18100745216 has 22 divisors (see below), whose sum is σ = 36183815970. Its totient is φ = 9050372096.

The previous prime is 18100745213. The next prime is 18100745227. The reversal of 18100745216 is 61254700181.

It can be written as a sum of positive squares in only one way, i.e., 17977446400 + 123298816 = 134080^2 + 11104^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18100745213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8837231 + ... + 8839278.

Almost surely, 2^18100745216 is an apocalyptic number.

18100745216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18100745216 is a deficient number, since it is larger than the sum of its proper divisors (18083070754).

18100745216 is an equidigital number, since it uses as much as digits as its factorization.

18100745216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17676529 (or 17676511 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 35.

The spelling of 18100745216 in words is "eighteen billion, one hundred million, seven hundred forty-five thousand, two hundred sixteen".