18234065820671 has 4 divisors (see below), whose sum is σ = 18234309578472. Its totient is φ = 18233822062872.

The previous prime is 18234065820667. The next prime is 18234065820689. The reversal of 18234065820671 is 17602856043281.

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

It is a cyclic number.

It is not a de Polignac number, because 18234065820671 - 2² = 18234065820667 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18234065823671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121766660 + ... + 121916313.

It is an arithmetic number, because the mean of its divisors is an integer number (4558577394618).

Almost surely, 2^{18234065820671} is an apocalyptic number.

18234065820671 is a deficient number, since it is larger than the sum of its proper divisors (243757801).

18234065820671 is an equidigital number, since it uses as much as digits as its factorization.

18234065820671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243757800.

The product of its (nonzero) digits is 3870720, while the sum is 53.

The spelling of 18234065820671 in words is "eighteen trillion, two hundred thirty-four billion, sixty-five million, eight hundred twenty thousand, six hundred seventy-one".