10661163610000 has 100 divisors (see below), whose sum is σ = 25850927242800. Its totient is φ = 4257991696000.

The previous prime is 10661163609989. The next prime is 10661163610063. The reversal of 10661163610000 is 1636116601.

It is a tau number, because it is divible by the number of its divisors (100).

It is a super-2 number, since 2×10661163610000² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5781111 + ... + 7398889.

It is an arithmetic number, because the mean of its divisors is an integer number (258509272428).

Almost surely, 2^{10661163610000} is an apocalyptic number.

10661163610000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10661163610000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12925463621400).

10661163610000 is an abundant number, since it is smaller than the sum of its proper divisors (15189763632800).

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

10661163610000 is an equidigital number, since it uses as much as digits as its factorization.

10661163610000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1618466 (or 1618445 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

Adding to 10661163610000 its reverse (1636116601), we get a palindrome (10662799726601).

The spelling of 10661163610000 in words is "ten trillion, six hundred sixty-one billion, one hundred sixty-three million, six hundred ten thousand".