10643844764 has 48 divisors (see below), whose sum is σ = 22446547200. Its totient is φ = 4314145536.

The previous prime is 10643844763. The next prime is 10643844769. The reversal of 10643844764 is 46744834601.

It is a super-2 number, since 2×10643844764² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10643844763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 298607 + ... + 332345.

It is an arithmetic number, because the mean of its divisors is an integer number (467636400).

Almost surely, 2^10643844764 is an apocalyptic number.

10643844764 is a gapful number since it is divisible by the number (14) 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 10643844764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11223273600).

10643844764 is an abundant number, since it is smaller than the sum of its proper divisors (11802702436).

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

10643844764 is a wasteful number, since it uses less digits than its factorization.

10643844764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34362 (or 34360 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 47.

The spelling of 10643844764 in words is "ten billion, six hundred forty-three million, eight hundred forty-four thousand, seven hundred sixty-four".