20680547216026 has 16 divisors (see below), whose sum is σ = 32097615388200. Its totient is φ = 9981500110848.

The previous prime is 20680547215967. The next prime is 20680547216033. The reversal of 20680547216026 is 62061274508602.

It can be written as a sum of positive squares in 4 ways, for example, as 17809674462801 + 2870872753225 = 4220151^2 + 1694365^2 .

It is a super-2 number, since 2×20680547216026² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39242031 + ... + 39765538.

Almost surely, 2^{20680547216026} is an apocalyptic number.

20680547216026 is a deficient number, since it is larger than the sum of its proper divisors (11417068172174).

20680547216026 is a wasteful number, since it uses less digits than its factorization.

20680547216026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79012113.

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 20680547216026 in words is "twenty trillion, six hundred eighty billion, five hundred forty-seven million, two hundred sixteen thousand, twenty-six".