26208642031 has 8 divisors (see below), whose sum is σ = 30790572624. Its totient is φ = 21993265920.

The previous prime is 26208642017. The next prime is 26208642041. The reversal of 26208642031 is 13024680262.

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-26208642031 is a prime.

It is a super-2 number, since 2×26208642031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26208642001) 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 7 ways as a sum of consecutive naturals, for example, 91638466 + ... + 91638751.

It is an arithmetic number, because the mean of its divisors is an integer number (3848821578).

Almost surely, 2^26208642031 is an apocalyptic number.

26208642031 is a deficient number, since it is larger than the sum of its proper divisors (4581930593).

26208642031 is a wasteful number, since it uses less digits than its factorization.

26208642031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183277241.

The product of its (nonzero) digits is 27648, while the sum is 34.

The spelling of 26208642031 in words is "twenty-six billion, two hundred eight million, six hundred forty-two thousand, thirty-one".