20506650020776 has 16 divisors (see below), whose sum is σ = 38451038303700. Its totient is φ = 10253039806464.

The previous prime is 20506650020579. The next prime is 20506650020777. The reversal of 20506650020776 is 67702005660502.

It can be written as a sum of positive squares in 2 ways, for example, as 20193106018276 + 313544002500 = 4493674^2 + 559950^2 .

It is not an unprimeable number, because it can be changed into a prime (20506650020777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35344755 + ... + 35920258.

Almost surely, 2^{20506650020776} is an apocalyptic number.

It is an amenable number.

20506650020776 is a deficient number, since it is larger than the sum of its proper divisors (17944388282924).

20506650020776 is a wasteful number, since it uses less digits than its factorization.

20506650020776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71300988 (or 71300984 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 46.

The spelling of 20506650020776 in words is "twenty trillion, five hundred six billion, six hundred fifty million, twenty thousand, seven hundred seventy-six".