20022666006442 has 64 divisors (see below), whose sum is σ = 32915588530176. Its totient is φ = 9059336415360.

The previous prime is 20022666006419. The next prime is 20022666006443. The reversal of 20022666006442 is 24460066622002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20022666006395 and 20022666006404.

It is not an unprimeable number, because it can be changed into a prime (20022666006443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12648556383 + ... + 12648557965.

It is an arithmetic number, because the mean of its divisors is an integer number (514306070784).

Almost surely, 2^{20022666006442} is an apocalyptic number.

20022666006442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20022666006442 is a deficient number, since it is larger than the sum of its proper divisors (12892922523734).

20022666006442 is a wasteful number, since it uses less digits than its factorization.

20022666006442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4315.

The product of its (nonzero) digits is 331776, while the sum is 40.

The spelling of 20022666006442 in words is "twenty trillion, twenty-two billion, six hundred sixty-six million, six thousand, four hundred forty-two".