10644139789 has 4 divisors (see below), whose sum is σ = 10747481056. Its totient is φ = 10540798524.

The previous prime is 10644139783. The next prime is 10644139811. The reversal of 10644139789 is 98793144601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98793144601 = 13907 ⋅7103843.

It is a cyclic number.

It is not a de Polignac number, because 10644139789 - 2³¹ = 8496656141 is a prime.

It is a super-2 number, since 2×10644139789² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10644139783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51670479 + ... + 51670684.

It is an arithmetic number, because the mean of its divisors is an integer number (2686870264).

Almost surely, 2^10644139789 is an apocalyptic number.

It is an amenable number.

10644139789 is a deficient number, since it is larger than the sum of its proper divisors (103341267).

10644139789 is a wasteful number, since it uses less digits than its factorization.

10644139789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103341266.

The product of its (nonzero) digits is 1306368, while the sum is 52.

The spelling of 10644139789 in words is "ten billion, six hundred forty-four million, one hundred thirty-nine thousand, seven hundred eighty-nine".