10666974420 has 72 divisors (see below), whose sum is σ = 32476920840. Its totient is φ = 2833939200.

The previous prime is 10666974389. The next prime is 10666974421. The reversal of 10666974420 is 2447966601.

It can be written as a sum of positive squares in 4 ways, for example, as 308213136 + 10358761284 = 17556^2 + 101778^2 .

It is a super-2 number, since 2×10666974420² (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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10666974421) 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 23 ways as a sum of consecutive naturals, for example, 61731 + ... + 158570.

It is an arithmetic number, because the mean of its divisors is an integer number (451068345).

Almost surely, 2^10666974420 is an apocalyptic number.

10666974420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10666974420 is an abundant number, since it is smaller than the sum of its proper divisors (21809946420).

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

10666974420 is a wasteful number, since it uses less digits than its factorization.

10666974420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220585 (or 220580 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 10666974420 in words is "ten billion, six hundred sixty-six million, nine hundred seventy-four thousand, four hundred twenty".