2026506811681 has 8 divisors (see below), whose sum is σ = 2210770751904. Its totient is φ = 1842248879520.

The previous prime is 2026506811657. The next prime is 2026506811739. The reversal of 2026506811681 is 1861186056202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2026506811681 - 2⁹ = 2026506811169 is a prime.

It is a super-2 number, since 2×2026506811681² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2026506811621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 781731 + ... + 2159656.

It is an arithmetic number, because the mean of its divisors is an integer number (276346343988).

Almost surely, 2^{2026506811681} is an apocalyptic number.

It is an amenable number.

2026506811681 is a deficient number, since it is larger than the sum of its proper divisors (184263940223).

2026506811681 is a wasteful number, since it uses less digits than its factorization.

2026506811681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3004031.

The product of its (nonzero) digits is 276480, while the sum is 46.

The spelling of 2026506811681 in words is "two trillion, twenty-six billion, five hundred six million, eight hundred eleven thousand, six hundred eighty-one".