10643780926 has 4 divisors (see below), whose sum is σ = 15965671392. Its totient is φ = 5321890462.

The previous prime is 10643780921. The next prime is 10643780947. The reversal of 10643780926 is 62908734601.

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

It is a super-2 number, since 2×10643780926² (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 (10643780921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2660945230 + ... + 2660945233.

It is an arithmetic number, because the mean of its divisors is an integer number (3991417848).

Almost surely, 2^10643780926 is an apocalyptic number.

10643780926 is a deficient number, since it is larger than the sum of its proper divisors (5321890466).

10643780926 is an equidigital number, since it uses as much as digits as its factorization.

10643780926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5321890465.

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 10643780926 in words is "ten billion, six hundred forty-three million, seven hundred eighty thousand, nine hundred twenty-six".