20650629776 has 60 divisors (see below), whose sum is σ = 49280788908. Its totient is φ = 8329660416.

The previous prime is 20650629767. The next prime is 20650629803. The reversal of 20650629776 is 67792605602.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9964032400 + 10686597376 = 99820^2 + 103376^2 .

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, 761381 + ... + 788036.

Almost surely, 2^20650629776 is an apocalyptic number.

It is an amenable number.

20650629776 is an abundant number, since it is smaller than the sum of its proper divisors (28630159132).

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

20650629776 is a wasteful number, since it uses less digits than its factorization.

20650629776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549456 (or 1549443 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 50.

The spelling of 20650629776 in words is "twenty billion, six hundred fifty million, six hundred twenty-nine thousand, seven hundred seventy-six".