10663400326660 has 144 divisors (see below), whose sum is σ = 24455569844160. Its totient is φ = 3900433501440.

The previous prime is 10663400326651. The next prime is 10663400326661. The reversal of 10663400326660 is 6662300436601.

It is a happy number.

It is a super-2 number, since 2×10663400326660² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10663400326661) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1454559195 + ... + 1454566525.

It is an arithmetic number, because the mean of its divisors is an integer number (169830346140).

Almost surely, 2^{10663400326660} is an apocalyptic number.

10663400326660 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 10663400326660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12227784922080).

10663400326660 is an abundant number, since it is smaller than the sum of its proper divisors (13792169517500).

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

10663400326660 is a wasteful number, since it uses less digits than its factorization.

10663400326660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14354 (or 14333 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 43.

The spelling of 10663400326660 in words is "ten trillion, six hundred sixty-three billion, four hundred million, three hundred twenty-six thousand, six hundred sixty".