26020636687 has 8 divisors (see below), whose sum is σ = 27585959552. Its totient is φ = 24500685600.

The previous prime is 26020636669. The next prime is 26020636699. The reversal of 26020636687 is 78663602062.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26020636687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26020636627) 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, 11341764 + ... + 11344057.

It is an arithmetic number, because the mean of its divisors is an integer number (3448244944).

Almost surely, 2^26020636687 is an apocalyptic number.

26020636687 is a deficient number, since it is larger than the sum of its proper divisors (1565322865).

26020636687 is a wasteful number, since it uses less digits than its factorization.

26020636687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22685889.

The product of its (nonzero) digits is 870912, while the sum is 46.

The spelling of 26020636687 in words is "twenty-six billion, twenty million, six hundred thirty-six thousand, six hundred eighty-seven".