26193050081 has 4 divisors (see below), whose sum is σ = 28574236464. Its totient is φ = 23811863700.

The previous prime is 26193050063. The next prime is 26193050083. The reversal of 26193050081 is 18005039162.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26193050081 is a prime.

It is a super-2 number, since 2×26193050081² (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 (26193050083) 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 3 ways as a sum of consecutive naturals, for example, 1190593175 + ... + 1190593196.

It is an arithmetic number, because the mean of its divisors is an integer number (7143559116).

Almost surely, 2^26193050081 is an apocalyptic number.

It is an amenable number.

26193050081 is a deficient number, since it is larger than the sum of its proper divisors (2381186383).

26193050081 is a wasteful number, since it uses less digits than its factorization.

26193050081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2381186382.

The product of its (nonzero) digits is 12960, while the sum is 35.

The spelling of 26193050081 in words is "twenty-six billion, one hundred ninety-three million, fifty thousand, eighty-one".