26642249589 has 8 divisors (see below), whose sum is σ = 35758251712. Its totient is φ = 17643873600.

The previous prime is 26642249587. The next prime is 26642249593. The reversal of 26642249589 is 98594224662.

It is a happy number.

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

It is not a de Polignac number, because 26642249589 - 2¹ = 26642249587 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26642249587) 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, 29406004 + ... + 29406909.

It is an arithmetic number, because the mean of its divisors is an integer number (4469781464).

Almost surely, 2^26642249589 is an apocalyptic number.

It is an amenable number.

26642249589 is a deficient number, since it is larger than the sum of its proper divisors (9116002123).

26642249589 is a wasteful number, since it uses less digits than its factorization.

26642249589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58813067.

The product of its digits is 14929920, while the sum is 57.

The spelling of 26642249589 in words is "twenty-six billion, six hundred forty-two million, two hundred forty-nine thousand, five hundred eighty-nine".