26405287601 has 48 divisors (see below), whose sum is σ = 35866718208. Its totient is φ = 18863215200.

The previous prime is 26405287537. The next prime is 26405287603. The reversal of 26405287601 is 10678250462.

It is not a de Polignac number, because 26405287601 - 2⁶ = 26405287537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26405287603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 846386 + ... + 877028.

It is an arithmetic number, because the mean of its divisors is an integer number (747223296).

Almost surely, 2^26405287601 is an apocalyptic number.

It is an amenable number.

26405287601 is a deficient number, since it is larger than the sum of its proper divisors (9461430607).

26405287601 is a wasteful number, since it uses less digits than its factorization.

26405287601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30730 (or 30711 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 26405287601 in words is "twenty-six billion, four hundred five million, two hundred eighty-seven thousand, six hundred one".