26620380771 has 4 divisors (see below), whose sum is σ = 35493841032. Its totient is φ = 17746920512.

The previous prime is 26620380763. The next prime is 26620380799. The reversal of 26620380771 is 17708302662.

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

It is a cyclic number.

It is not a de Polignac number, because 26620380771 - 2³ = 26620380763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26620380701) 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, 4436730126 + ... + 4436730131.

It is an arithmetic number, because the mean of its divisors is an integer number (8873460258).

Almost surely, 2^26620380771 is an apocalyptic number.

26620380771 is a deficient number, since it is larger than the sum of its proper divisors (8873460261).

26620380771 is an equidigital number, since it uses as much as digits as its factorization.

26620380771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8873460260.

The product of its (nonzero) digits is 169344, while the sum is 42.

The spelling of 26620380771 in words is "twenty-six billion, six hundred twenty million, three hundred eighty thousand, seven hundred seventy-one".