18297161525643 has 48 divisors (see below), whose sum is σ = 33340681979136. Its totient is φ = 8773863658560.

The previous prime is 18297161525641. The next prime is 18297161525647. The reversal of 18297161525643 is 34652516179281.

It is not a de Polignac number, because 18297161525643 - 2¹ = 18297161525641 is a prime.

It is a super-2 number, since 2×18297161525643² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18297161525641) 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 47 ways as a sum of consecutive naturals, for example, 435190471 + ... + 435232512.

It is an arithmetic number, because the mean of its divisors is an integer number (694597541232).

Almost surely, 2^{18297161525643} is an apocalyptic number.

18297161525643 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

18297161525643 is a deficient number, since it is larger than the sum of its proper divisors (15043520453493).

18297161525643 is a wasteful number, since it uses less digits than its factorization.

18297161525643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870423024 (or 870423017 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 60.

The spelling of 18297161525643 in words is "eighteen trillion, two hundred ninety-seven billion, one hundred sixty-one million, five hundred twenty-five thousand, six hundred forty-three".