26491791201 has 8 divisors (see below), whose sum is σ = 35988848640. Its totient is φ = 17327963952.

The previous prime is 26491791133. The next prime is 26491791211. The reversal of 26491791201 is 10219719462.

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

It is not a de Polignac number, because 26491791201 - 2¹⁰ = 26491790177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26491791211) 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, 83307361 + ... + 83307678.

It is an arithmetic number, because the mean of its divisors is an integer number (4498606080).

Almost surely, 2^26491791201 is an apocalyptic number.

It is an amenable number.

26491791201 is a deficient number, since it is larger than the sum of its proper divisors (9497057439).

26491791201 is a wasteful number, since it uses less digits than its factorization.

26491791201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166615095.

The product of its (nonzero) digits is 54432, while the sum is 42.

The spelling of 26491791201 in words is "twenty-six billion, four hundred ninety-one million, seven hundred ninety-one thousand, two hundred one".