26609645136 has 20 divisors (see below), whose sum is σ = 68741583392. Its totient is φ = 8869881696.

The previous prime is 26609645081. The next prime is 26609645171. The reversal of 26609645136 is 63154690662.

It is a happy number.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 554367607 = 26609645136 / (2 + 6 + 6 + 0 + 9 + 6 + 4 + 5 + 1 + 3 + 6).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277183756 + ... + 277183851.

Almost surely, 2^26609645136 is an apocalyptic number.

It is an amenable number.

26609645136 is an abundant number, since it is smaller than the sum of its proper divisors (42131938256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26609645136 is a wasteful number, since it uses less digits than its factorization.

26609645136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554367618 (or 554367612 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 48.

The spelling of 26609645136 in words is "twenty-six billion, six hundred nine million, six hundred forty-five thousand, one hundred thirty-six".