20772158674996 has 6 divisors (see below), whose sum is σ = 36351277681250. Its totient is φ = 10386079337496.

The previous prime is 20772158674991. The next prime is 20772158674997. The reversal of 20772158674996 is 69947685127702.

It can be written as a sum of positive squares in only one way, i.e., 19810386184996 + 961772490000 = 4450886^2 + 980700^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20772158674991) 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 as a sum of consecutive naturals, namely, 2596519834371 + ... + 2596519834378.

Almost surely, 2^{20772158674996} is an apocalyptic number.

It is an amenable number.

20772158674996 is a deficient number, since it is larger than the sum of its proper divisors (15579119006254).

20772158674996 is a wasteful number, since it uses less digits than its factorization.

20772158674996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5193039668753 (or 5193039668751 counting only the distinct ones).

The product of its (nonzero) digits is 640120320, while the sum is 73.

The spelling of 20772158674996 in words is "twenty trillion, seven hundred seventy-two billion, one hundred fifty-eight million, six hundred seventy-four thousand, nine hundred ninety-six".