26118491969 has 8 divisors (see below), whose sum is σ = 26966714880. Its totient is φ = 25270624800.

The previous prime is 26118491963. The next prime is 26118492047. The reversal of 26118491969 is 96919481162.

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-26118491969 is a prime.

It is a super-2 number, since 2×26118491969² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26118491963) 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, 64517 + ... + 237485.

It is an arithmetic number, because the mean of its divisors is an integer number (3370839360).

Almost surely, 2^26118491969 is an apocalyptic number.

It is an amenable number.

26118491969 is a deficient number, since it is larger than the sum of its proper divisors (848222911).

26118491969 is a wasteful number, since it uses less digits than its factorization.

26118491969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177871.

The product of its digits is 1679616, while the sum is 56.

The spelling of 26118491969 in words is "twenty-six billion, one hundred eighteen million, four hundred ninety-one thousand, nine hundred sixty-nine".