10555720644736 has 64 divisors (see below), whose sum is σ = 22276530524160. Its totient is φ = 4965042688000.

The previous prime is 10555720644709. The next prime is 10555720644793. The reversal of 10555720644736 is 63744602755501.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×10555720644736² (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 7 ways as a sum of consecutive naturals, for example, 3444561 + ... + 5742511.

It is an arithmetic number, because the mean of its divisors is an integer number (348070789440).

Almost surely, 2^{10555720644736} is an apocalyptic number.

10555720644736 is a gapful number since it is divisible by the number (16) 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 10555720644736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11138265262080).

10555720644736 is an abundant number, since it is smaller than the sum of its proper divisors (11720809879424).

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

10555720644736 is a wasteful number, since it uses less digits than its factorization.

10555720644736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2300093 (or 2300081 counting only the distinct ones).

The product of its (nonzero) digits is 21168000, while the sum is 55.

The spelling of 10555720644736 in words is "ten trillion, five hundred fifty-five billion, seven hundred twenty million, six hundred forty-four thousand, seven hundred thirty-six".