10643011090 has 16 divisors (see below), whose sum is σ = 19518881688. Its totient is φ = 4176879616.

The previous prime is 10643011087. The next prime is 10643011091. The reversal of 10643011090 is 9011034601.

It can be written as a sum of positive squares in 4 ways, for example, as 10638478449 + 4532641 = 103143^2 + 2129^2 .

It is a super-2 number, since 2×10643011090² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10643011091) 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 7 ways as a sum of consecutive naturals, for example, 10040047 + ... + 10041106.

Almost surely, 2^10643011090 is an apocalyptic number.

10643011090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10643011090 is a deficient number, since it is larger than the sum of its proper divisors (8875870598).

10643011090 is a wasteful number, since it uses less digits than its factorization.

10643011090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20081213.

The product of its (nonzero) digits is 648, while the sum is 25.

Adding to 10643011090 its reverse (9011034601), we get a palindrome (19654045691).

The spelling of 10643011090 in words is "ten billion, six hundred forty-three million, eleven thousand, ninety".