26791001077 has 4 divisors (see below), whose sum is σ = 26792919136. Its totient is φ = 26789083020.

The previous prime is 26791001047. The next prime is 26791001099. The reversal of 26791001077 is 77010019762.

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-26791001077 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 (26791001047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 937923 + ... + 966064.

It is an arithmetic number, because the mean of its divisors is an integer number (6698229784).

Almost surely, 2^26791001077 is an apocalyptic number.

It is an amenable number.

26791001077 is a deficient number, since it is larger than the sum of its proper divisors (1918059).

26791001077 is a wasteful number, since it uses less digits than its factorization.

26791001077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1918058.

The product of its (nonzero) digits is 37044, while the sum is 40.

The spelling of 26791001077 in words is "twenty-six billion, seven hundred ninety-one million, one thousand, seventy-seven".