10669423905 has 72 divisors (see below), whose sum is σ = 21919189032. Its totient is φ = 4785371136.

The previous prime is 10669423903. The next prime is 10669423909. The reversal of 10669423905 is 50932496601.

It can be written as a sum of positive squares in 4 ways, for example, as 1893294144 + 8776129761 = 43512^2 + 93681^2 .

It is not a de Polignac number, because 10669423905 - 2¹ = 10669423903 is a prime.

It is a super-2 number, since 2×10669423905² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (10669423903) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 71217 + ... + 162513.

It is an arithmetic number, because the mean of its divisors is an integer number (304433181).

Almost surely, 2^10669423905 is an apocalyptic number.

10669423905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10669423905 is an abundant number, since it is smaller than the sum of its proper divisors (11249765127).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10669423905 is a wasteful number, since it uses less digits than its factorization.

10669423905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91375 (or 91365 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The spelling of 10669423905 in words is "ten billion, six hundred sixty-nine million, four hundred twenty-three thousand, nine hundred five".