10665144220 has 48 divisors (see below), whose sum is σ = 23596221600. Its totient is φ = 4037990400.

The previous prime is 10665144211. The next prime is 10665144221. The reversal of 10665144220 is 2244156601.

It is a happy number.

It is a super-2 number, since 2×10665144220² (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 (10665144221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 444696 + ... + 468064.

It is an arithmetic number, because the mean of its divisors is an integer number (491587950).

Almost surely, 2^10665144220 is an apocalyptic number.

10665144220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10665144220 is an abundant number, since it is smaller than the sum of its proper divisors (12931077380).

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

10665144220 is a wasteful number, since it uses less digits than its factorization.

10665144220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24598 (or 24596 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The spelling of 10665144220 in words is "ten billion, six hundred sixty-five million, one hundred forty-four thousand, two hundred twenty".