26550814247 has 4 divisors (see below), whose sum is σ = 26661905760. Its totient is φ = 26439722736.

The previous prime is 26550814117. The next prime is 26550814291. The reversal of 26550814247 is 74241805562.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74241805562 = 2 ⋅37120902781.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26550814247 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26550814198 and 26550814207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26550814447) 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, 55545398 + ... + 55545875.

It is an arithmetic number, because the mean of its divisors is an integer number (6665476440).

Almost surely, 2^26550814247 is an apocalyptic number.

26550814247 is a deficient number, since it is larger than the sum of its proper divisors (111091513).

26550814247 is a wasteful number, since it uses less digits than its factorization.

26550814247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111091512.

The product of its (nonzero) digits is 537600, while the sum is 44.

The spelling of 26550814247 in words is "twenty-six billion, five hundred fifty million, eight hundred fourteen thousand, two hundred forty-seven".