10644890239 has 4 divisors (see below), whose sum is σ = 11205147640. Its totient is φ = 10084632840.

The previous prime is 10644890227. The next prime is 10644890251. The reversal of 10644890239 is 93209844601.

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

It is an interprime number because it is at equal distance from previous prime (10644890227) and next prime (10644890251).

It is a cyclic number.

It is not a de Polignac number, because 10644890239 - 2¹³ = 10644882047 is a prime.

It is a super-2 number, since 2×10644890239² (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 (10644890209) 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, 280128672 + ... + 280128709.

It is an arithmetic number, because the mean of its divisors is an integer number (2801286910).

Almost surely, 2^10644890239 is an apocalyptic number.

10644890239 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

10644890239 is a deficient number, since it is larger than the sum of its proper divisors (560257401).

10644890239 is an equidigital number, since it uses as much as digits as its factorization.

10644890239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560257400.

The product of its (nonzero) digits is 373248, while the sum is 46.

The spelling of 10644890239 in words is "ten billion, six hundred forty-four million, eight hundred ninety thousand, two hundred thirty-nine".