20996162273541 has 72 divisors (see below), whose sum is σ = 35798177799360. Its totient is φ = 10717642241280.

The previous prime is 20996162273503. The next prime is 20996162273557. The reversal of 20996162273541 is 14537226169902.

It is not a de Polignac number, because 20996162273541 - 2²⁶ = 20996095164677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20996162273591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 332505 + ... + 6488673.

It is an arithmetic number, because the mean of its divisors is an integer number (497196913880).

Almost surely, 2^{20996162273541} is an apocalyptic number.

20996162273541 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20996162273541 is a deficient number, since it is larger than the sum of its proper divisors (14802015525819).

20996162273541 is a wasteful number, since it uses less digits than its factorization.

20996162273541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6156267 (or 6156223 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 57.

The spelling of 20996162273541 in words is "twenty trillion, nine hundred ninety-six billion, one hundred sixty-two million, two hundred seventy-three thousand, five hundred forty-one".