26264536387 has 4 divisors (see below), whose sum is σ = 26264974840. Its totient is φ = 26264097936.

The previous prime is 26264536307. The next prime is 26264536411. The reversal of 26264536387 is 78363546262.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78363546262 = 2 ⋅39181773131.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26264536387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26264536307) 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, 111837 + ... + 255022.

It is an arithmetic number, because the mean of its divisors is an integer number (6566243710).

Almost surely, 2^26264536387 is an apocalyptic number.

26264536387 is a deficient number, since it is larger than the sum of its proper divisors (438453).

26264536387 is an equidigital number, since it uses as much as digits as its factorization.

26264536387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438452.

The product of its digits is 8709120, while the sum is 52.

The spelling of 26264536387 in words is "twenty-six billion, two hundred sixty-four million, five hundred thirty-six thousand, three hundred eighty-seven".