18112497680 has 40 divisors (see below), whose sum is σ = 44588710872. Its totient is φ = 6818822144.

The previous prime is 18112497679. The next prime is 18112497803. The reversal of 18112497680 is 8679421181.

It can be written as a sum of positive squares in 4 ways, for example, as 281702656 + 17830795024 = 16784^2 + 133532^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6657647 + ... + 6660366.

Almost surely, 2^18112497680 is an apocalyptic number.

18112497680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18112497680 is an abundant number, since it is smaller than the sum of its proper divisors (26476213192).

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

18112497680 is a wasteful number, since it uses less digits than its factorization.

18112497680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13318043 (or 13318037 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 47.

The spelling of 18112497680 in words is "eighteen billion, one hundred twelve million, four hundred ninety-seven thousand, six hundred eighty".