18075281040 has 60 divisors (see below), whose sum is σ = 60702821244. Its totient is φ = 4820074752.

The previous prime is 18075281023. The next prime is 18075281041. The reversal of 18075281040 is 4018257081.

18075281040 is a `hidden beast` number, since 1 + 80 + 7 + 528 + 10 + 40 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13832582544 + 4242698496 = 117612^2 + 65136^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 18075280986 and 18075281004.

It is not an unprimeable number, because it can be changed into a prime (18075281041) 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 11 ways as a sum of consecutive naturals, for example, 12551559 + ... + 12552998.

Almost surely, 2^18075281040 is an apocalyptic number.

18075281040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18075281040 is an abundant number, since it is smaller than the sum of its proper divisors (42627540204).

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

18075281040 is a wasteful number, since it uses less digits than its factorization.

18075281040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25104576 (or 25104567 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The spelling of 18075281040 in words is "eighteen billion, seventy-five million, two hundred eighty-one thousand, forty".