18071652063 has 4 divisors (see below), whose sum is σ = 24095536088. Its totient is φ = 12047768040.

The previous prime is 18071652047. The next prime is 18071652091. The reversal of 18071652063 is 36025617081.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 18071652063 - 2⁴ = 18071652047 is a prime.

It is a super-2 number, since 2×18071652063² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18071652043) 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 3 ways as a sum of consecutive naturals, for example, 3011942008 + ... + 3011942013.

It is an arithmetic number, because the mean of its divisors is an integer number (6023884022).

Almost surely, 2^18071652063 is an apocalyptic number.

18071652063 is a deficient number, since it is larger than the sum of its proper divisors (6023884025).

18071652063 is an equidigital number, since it uses as much as digits as its factorization.

18071652063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6023884024.

The product of its (nonzero) digits is 60480, while the sum is 39.

The spelling of 18071652063 in words is "eighteen billion, seventy-one million, six hundred fifty-two thousand, sixty-three".