1373666617181 has 8 divisors (see below), whose sum is σ = 1394658431040. Its totient is φ = 1352780556192.

The previous prime is 1373666617177. The next prime is 1373666617199. The reversal of 1373666617181 is 1817166663731.

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 1373666617181 - 2² = 1373666617177 is a prime.

It is a super-2 number, since 2×1373666617181² (a number of 25 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 (1373666614181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26412041 + ... + 26463998.

It is an arithmetic number, because the mean of its divisors is an integer number (174332303880).

Almost surely, 2^{1373666617181} is an apocalyptic number.

It is an amenable number.

1373666617181 is a deficient number, since it is larger than the sum of its proper divisors (20991813859).

1373666617181 is an equidigital number, since it uses as much as digits as its factorization.

1373666617181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52876435.

The product of its digits is 4572288, while the sum is 56.

The spelling of 1373666617181 in words is "one trillion, three hundred seventy-three billion, six hundred sixty-six million, six hundred seventeen thousand, one hundred eighty-one".