18075781101 has 8 divisors (see below), whose sum is σ = 27544047424. Its totient is φ = 10329017760.

The previous prime is 18075781093. The next prime is 18075781111. The reversal of 18075781101 is 10118757081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18075781101 - 2³ = 18075781093 is a prime.

It is a super-2 number, since 2×18075781101² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18075781101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18075781111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430375720 + ... + 430375761.

It is an arithmetic number, because the mean of its divisors is an integer number (3443005928).

Almost surely, 2^18075781101 is an apocalyptic number.

It is an amenable number.

18075781101 is a deficient number, since it is larger than the sum of its proper divisors (9468266323).

18075781101 is an equidigital number, since it uses as much as digits as its factorization.

18075781101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860751491.

The product of its (nonzero) digits is 15680, while the sum is 39.

The spelling of 18075781101 in words is "eighteen billion, seventy-five million, seven hundred eighty-one thousand, one hundred one".