26207857489 has 8 divisors (see below), whose sum is σ = 28782273600. Its totient is φ = 23665422000.

The previous prime is 26207857471. The next prime is 26207857513. The reversal of 26207857489 is 98475870262.

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 26207857489 - 2²¹ = 26205760337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26207857439) 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, 7993437 + ... + 7996714.

It is an arithmetic number, because the mean of its divisors is an integer number (3597784200).

Almost surely, 2^26207857489 is an apocalyptic number.

It is an amenable number.

26207857489 is a deficient number, since it is larger than the sum of its proper divisors (2574416111).

26207857489 is a wasteful number, since it uses less digits than its factorization.

26207857489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15990311.

The product of its (nonzero) digits is 13547520, while the sum is 58.

The spelling of 26207857489 in words is "twenty-six billion, two hundred seven million, eight hundred fifty-seven thousand, four hundred eighty-nine".