7181663000000 has 392 divisors, whose sum is σ = 18574583804784. Its totient is φ = 2752358400000.

The previous prime is 7181662999961. The next prime is 7181663000009. The reversal of 7181663000000 is 3661817.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7181663000009) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 2478998552 + ... + 2479001448.

Almost surely, 2^{7181663000000} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7181663000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9287291902392).

7181663000000 is an abundant number, since it is smaller than the sum of its proper divisors (11392920804784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7181663000000 is an frugal number, since it uses more digits than its factorization.

7181663000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3043 (or 3008 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

Adding to 7181663000000 its reverse (3661817), we get a palindrome (7181666661817).

The spelling of 7181663000000 in words is "seven trillion, one hundred eighty-one billion, six hundred sixty-three million", and thus it is an aban number.