20200020011956 has 6 divisors (see below), whose sum is σ = 35350035020930. Its totient is φ = 10100010005976.

The previous prime is 20200020011953. The next prime is 20200020011957. The reversal of 20200020011956 is 65911002000202.

It can be written as a sum of positive squares in only one way, i.e., 19826234507556 + 373785504400 = 4452666^2 + 611380^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200020011953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2525002501491 + ... + 2525002501498.

Almost surely, 2^{20200020011956} is an apocalyptic number.

It is an amenable number.

20200020011956 is a deficient number, since it is larger than the sum of its proper divisors (15150015008974).

20200020011956 is a wasteful number, since it uses less digits than its factorization.

20200020011956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5050005002993 (or 5050005002991 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The spelling of 20200020011956 in words is "twenty trillion, two hundred billion, twenty million, eleven thousand, nine hundred fifty-six".