18132081222697 has 8 divisors (see below), whose sum is σ = 20200196588040. Its totient is φ = 16160157269760.

The previous prime is 18132081222667. The next prime is 18132081222719. The reversal of 18132081222697 is 79622218023181.

It can be written as a sum of positive squares in 4 ways, for example, as 153980899216 + 17978100323481 = 392404^2 + 4240059^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 18132081222697 - 2¹⁹ = 18132080698409 is a prime.

It is a super-2 number, since 2×18132081222697² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18132081222637) 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, 24047852704 + ... + 24047853457.

It is an arithmetic number, because the mean of its divisors is an integer number (2525024573505).

Almost surely, 2^{18132081222697} is an apocalyptic number.

It is an amenable number.

18132081222697 is a deficient number, since it is larger than the sum of its proper divisors (2068115365343).

18132081222697 is a wasteful number, since it uses less digits than its factorization.

18132081222697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48095706203.

The product of its (nonzero) digits is 1161216, while the sum is 52.

The spelling of 18132081222697 in words is "eighteen trillion, one hundred thirty-two billion, eighty-one million, two hundred twenty-two thousand, six hundred ninety-seven".