10643844765 has 16 divisors (see below), whose sum is σ = 17031945600. Its totient is φ = 5676119232.

The previous prime is 10643844763. The next prime is 10643844769. The reversal of 10643844765 is 56744834601.

It is not a de Polignac number, because 10643844765 - 2¹ = 10643844763 is a prime.

It is a super-2 number, since 2×10643844765² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135591 + ... + 199179.

It is an arithmetic number, because the mean of its divisors is an integer number (1064496600).

Almost surely, 2^10643844765 is an apocalyptic number.

10643844765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10643844765 is a deficient number, since it is larger than the sum of its proper divisors (6388100835).

10643844765 is a wasteful number, since it uses less digits than its factorization.

10643844765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74756.

The product of its (nonzero) digits is 1935360, while the sum is 48.

The spelling of 10643844765 in words is "ten billion, six hundred forty-three million, eight hundred forty-four thousand, seven hundred sixty-five".