26161417511 has 4 divisors (see below), whose sum is σ = 26161802400. Its totient is φ = 26161032624.

The previous prime is 26161417501. The next prime is 26161417519. The reversal of 26161417511 is 11571416162.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26161417511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26161417519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60191 + ... + 236528.

It is an arithmetic number, because the mean of its divisors is an integer number (6540450600).

Almost surely, 2^26161417511 is an apocalyptic number.

26161417511 is a deficient number, since it is larger than the sum of its proper divisors (384889).

26161417511 is an equidigital number, since it uses as much as digits as its factorization.

26161417511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384888.

The product of its digits is 10080, while the sum is 35.

The spelling of 26161417511 in words is "twenty-six billion, one hundred sixty-one million, four hundred seventeen thousand, five hundred eleven".