26308906451 has 4 divisors (see below), whose sum is σ = 26360594400. Its totient is φ = 26257218504.

The previous prime is 26308906447. The next prime is 26308906513. The reversal of 26308906451 is 15460980362.

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 26308906451 - 2² = 26308906447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26308966451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25843211 + ... + 25844228.

It is an arithmetic number, because the mean of its divisors is an integer number (6590148600).

Almost surely, 2^26308906451 is an apocalyptic number.

26308906451 is a deficient number, since it is larger than the sum of its proper divisors (51687949).

26308906451 is an equidigital number, since it uses as much as digits as its factorization.

26308906451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51687948.

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 26308906451 in words is "twenty-six billion, three hundred eight million, nine hundred six thousand, four hundred fifty-one".