20066758340 has 24 divisors (see below), whose sum is σ = 43279118232. Its totient is φ = 7809765120.

The previous prime is 20066758339. The next prime is 20066758351. The reversal of 20066758340 is 4385766002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5550846016 + 14515912324 = 74504^2 + 120482^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13557881 + ... + 13559360.

It is an arithmetic number, because the mean of its divisors is an integer number (1803296593).

Almost surely, 2^20066758340 is an apocalyptic number.

20066758340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20066758340 is an abundant number, since it is smaller than the sum of its proper divisors (23212359892).

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

20066758340 is a wasteful number, since it uses less digits than its factorization.

20066758340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27117287 (or 27117285 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 20066758340 in words is "twenty billion, sixty-six million, seven hundred fifty-eight thousand, three hundred forty".