10665661050 has 144 divisors (see below), whose sum is σ = 31303041120. Its totient is φ = 2582064000.

The previous prime is 10665661049. The next prime is 10665661051. The reversal of 10665661050 is 5016656601.

It is an interprime number because it is at equal distance from previous prime (10665661049) and next prime (10665661051).

It is a super-2 number, since 2×10665661050² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10665660996 and 10665661014.

It is not an unprimeable number, because it can be changed into a prime (10665661051) 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 71 ways as a sum of consecutive naturals, for example, 6389616 + ... + 6391284.

It is an arithmetic number, because the mean of its divisors is an integer number (217382230).

Almost surely, 2^10665661050 is an apocalyptic number.

10665661050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 10665661050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15651520560).

10665661050 is an abundant number, since it is smaller than the sum of its proper divisors (20637380070).

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

10665661050 is a wasteful number, since it uses less digits than its factorization.

10665661050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2989 (or 2981 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 10665661050 in words is "ten billion, six hundred sixty-five million, six hundred sixty-one thousand, fifty".