20626466639706 has 32 divisors (see below), whose sum is σ = 45839190302400. Its totient is φ = 6875099214480.

The previous prime is 20626466639687. The next prime is 20626466639711. The reversal of 20626466639706 is 60793666462602.

It is a happy number.

It is a super-2 number, since 2×20626466639706² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9861625 + ... + 11768796.

It is an arithmetic number, because the mean of its divisors is an integer number (1432474696950).

Almost surely, 2^{20626466639706} is an apocalyptic number.

20626466639706 is an abundant number, since it is smaller than the sum of its proper divisors (25212723662694).

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

20626466639706 is a wasteful number, since it uses less digits than its factorization.

20626466639706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21648091 (or 21648085 counting only the distinct ones).

The product of its (nonzero) digits is 141087744, while the sum is 63.

Adding to 20626466639706 its sum of digits (63), we get a square (20626466639769 = 4541637²).

The spelling of 20626466639706 in words is "twenty trillion, six hundred twenty-six billion, four hundred sixty-six million, six hundred thirty-nine thousand, seven hundred six".