20081712026 has 16 divisors (see below), whose sum is σ = 31921105320. Its totient is φ = 9442329600.

The previous prime is 20081712019. The next prime is 20081712061. The reversal of 20081712026 is 62021718002.

It can be written as a sum of positive squares in 4 ways, for example, as 7525389001 + 12556323025 = 86749^2 + 112055^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20081712026.

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, 205061 + ... + 286728.

Almost surely, 2^20081712026 is an apocalyptic number.

20081712026 is a deficient number, since it is larger than the sum of its proper divisors (11839393294).

20081712026 is a wasteful number, since it uses less digits than its factorization.

20081712026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493009.

The product of its (nonzero) digits is 2688, while the sum is 29.

The spelling of 20081712026 in words is "twenty billion, eighty-one million, seven hundred twelve thousand, twenty-six".