26532772447 has 4 divisors (see below), whose sum is σ = 26546644080. Its totient is φ = 26518900816.

The previous prime is 26532772439. The next prime is 26532772517. The reversal of 26532772447 is 74427723562.

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 26532772447 - 2³ = 26532772439 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26532772447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26532776447) 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, 6932947 + ... + 6936772.

It is an arithmetic number, because the mean of its divisors is an integer number (6636661020).

Almost surely, 2^26532772447 is an apocalyptic number.

26532772447 is a deficient number, since it is larger than the sum of its proper divisors (13871633).

26532772447 is a wasteful number, since it uses less digits than its factorization.

26532772447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13871632.

The product of its digits is 3951360, while the sum is 49.

The spelling of 26532772447 in words is "twenty-six billion, five hundred thirty-two million, seven hundred seventy-two thousand, four hundred forty-seven".