20402426446026 has 16 divisors (see below), whose sum is σ = 41225521479744. Its totient is φ = 6730697384064.

The previous prime is 20402426446021. The next prime is 20402426446033. The reversal of 20402426446026 is 62064462420402.

It is a happy number.

It is a super-2 number, since 2×20402426446026² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20402426446021) 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 7 ways as a sum of consecutive naturals, for example, 17527857190 + ... + 17527858353.

It is an arithmetic number, because the mean of its divisors is an integer number (2576595092484).

Almost surely, 2^{20402426446026} is an apocalyptic number.

20402426446026 is an abundant number, since it is smaller than the sum of its proper divisors (20823095033718).

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

20402426446026 is a wasteful number, since it uses less digits than its factorization.

20402426446026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35055715645.

The product of its (nonzero) digits is 884736, while the sum is 42.

Adding to 20402426446026 its reverse (62064462420402), we get a palindrome (82466888866428).

The spelling of 20402426446026 in words is "twenty trillion, four hundred two billion, four hundred twenty-six million, four hundred forty-six thousand, twenty-six".