20026666242 has 48 divisors (see below), whose sum is σ = 48968038080. Its totient is φ = 5859420000.

The previous prime is 20026666241. The next prime is 20026666249. The reversal of 20026666242 is 24266662002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20026666197 and 20026666206.

It is not an unprimeable number, because it can be changed into a prime (20026666241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1738134 + ... + 1749617.

It is an arithmetic number, because the mean of its divisors is an integer number (1020167460).

Almost surely, 2^20026666242 is an apocalyptic number.

20026666242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20026666242 is an abundant number, since it is smaller than the sum of its proper divisors (28941371838).

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

20026666242 is a wasteful number, since it uses less digits than its factorization.

20026666242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3487799 (or 3487796 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The spelling of 20026666242 in words is "twenty billion, twenty-six million, six hundred sixty-six thousand, two hundred forty-two".