10643619839 has 4 divisors (see below), whose sum is σ = 10656490824. Its totient is φ = 10630748856.

The previous prime is 10643619827. The next prime is 10643619871. The reversal of 10643619839 is 93891634601.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10643619839 - 2¹⁶ = 10643554303 is a prime.

It is a super-2 number, since 2×10643619839² (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 (10643619809) 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, 6434252 + ... + 6435905.

It is an arithmetic number, because the mean of its divisors is an integer number (2664122706).

Almost surely, 2^10643619839 is an apocalyptic number.

10643619839 is a deficient number, since it is larger than the sum of its proper divisors (12870985).

10643619839 is an equidigital number, since it uses as much as digits as its factorization.

10643619839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12870984.

The product of its (nonzero) digits is 839808, while the sum is 50.

The spelling of 10643619839 in words is "ten billion, six hundred forty-three million, six hundred nineteen thousand, eight hundred thirty-nine".