20426060406664 has 48 divisors (see below), whose sum is σ = 42379628791500. Its totient is φ = 9222260277120.

The previous prime is 20426060406643. The next prime is 20426060406793. The reversal of 20426060406664 is 46660406062402.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14244661124100 + 6181399282564 = 3774210^2 + 2486242^2 .

It is a super-3 number, since 3×20426060406664³ (a number of 41 digits) contains 333 as substring.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 70665507 + ... + 70953970.

Almost surely, 2^{20426060406664} is an apocalyptic number.

It is an amenable number.

20426060406664 is an abundant number, since it is smaller than the sum of its proper divisors (21953568384836).

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

20426060406664 is a wasteful number, since it uses less digits than its factorization.

20426060406664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141619654 (or 141619639 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 46.

The spelling of 20426060406664 in words is "twenty trillion, four hundred twenty-six billion, sixty million, four hundred six thousand, six hundred sixty-four".